acids and bases worksheet answers pdf

1) Using your knowledge of the Brønsted-Lowry theory of acids and bases, write equations for the following acid-base reactions and indicate each conjugate acid-base pair: a) HNO3 + OH-1 ( H2O + NO3-1. Write an equation that shows the reaction of hydrogen sulfide, HS– with hydroxide ion, OH–. Sanhot Simare Mare. 0000047117 00000 n ... IGCSE-Acid-Bases-WS-Answer-key. What makes a base weak? 0000013588 00000 n (Acids/Bases) are also commonly used to produce soaps and have a (bitter/sour) taste. Compare and contrast acids and bases by completing the following table. It also establishes important differences between these two kinds of substances. The stronger the acid, the weaker its conjugate base. Chapter 5 Acids, Bases, and Acid-Base Reactions. 0000007572 00000 n 0000067722 00000 n 3719 Acids and Bases Worksheet – Answers 1. c. Their pure aqueous solutions are electrolytes. NaOH is a Lewis base because the lone pairs on the hydroxide ion can be donated to other compounds. This paper. Write the conjugate base for each of the following: a. H2S c. NH3 b. HS-1 d. H2SO3 18. a. HS-1 b. S-2 c. NH2-1 d. HSO3-1 pH practice - Answers 1) What is the pH and pOH of a 1.2 x 10-3 HBr solution? 0000002911 00000 n 0000025974 00000 n Phosphoric acid H 3 PO 4 9. Acids taste sour and can be corrosive. � Ö Â Ö Â | � | ì 8  ÿÿÿÿ Pp«Ğ ÿÿÿÿ ƒ J h Í 0 ı , ï" Í ï" 8 ï" Ö 8 0 � " ¿ × ë – � � � ¢ ¢ Í @ � � � ı � � � � ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ÿÿÿÿ ï" � � � � � � � � � | œ : Acid and Base Worksheet - Answers 1) Using your knowledge of the Brønsted-Lowry theory of acids and bases, write equations for the following acid-base reactions and indicate each conjugate acid-base pair: a) HNO3 + OH-1 ( H2O + NO3-1 HNO3 and NO3-1 make one pair OH-1 and H2O make the other b) CH3NH2 + H2O ( CH3NH3+ + OH-1 CH3NH2 and CH3NH3+1 make one pair OH-1 and H2O make the other c) OH-1 + HPO4-2 ( H2O + PO4-3 HPO4-2 and PO4-3 make one pair OH-1 and H2O make the other 2) The compound NaOH is a base by all three of the theories we discussed in class. Students begin with four input activities where they read articles, explore hands-on demos, research online, and watch videos all about acids and bases. 0000003039 00000 n 0000008727 00000 n This is formed by dissolving carbon dioxide in water. They are molecular compounds with ionizable hydrogen atoms. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. 0000018899 00000 n 6 Full PDFs related to this paper. 0000009397 00000 n (acid, base, neutral) 10. NaOH is an Arrhenius base because it creates OH-1 ions when placed in water. 3. 3. Sodium oxide and water Na2O + H2O ( 2NaOH(aq) Basic anhydride c. Dichlorine trioxide and water Cl2O3 + H2O ( 2HClO2 Acidic anhydride d. Beryllium oxide and water BeO + H2O ( Be(OH)2 Basic anhydride 5) Borane (BH3) is a basic compound, but doesn’t conduct electricity when you dissolve it in water. A base accepts a proton to form a conjugate acid. 5. Which bases are called alkalies? 3719 Acids and Bases Worksheet – Answers 1. 2. 0000017890 00000 n Likewise, the stronger the base, the weaker its conjugate acid. d. Show how the following acids and bases ionize: a. HCl → H+1 + Cl-1 c. H 2 CO 3 → 2H+1 + CO 3-2 b. NaOH → Na+1 + OH-1 d. Ba(OH) 2 → Ba+2 + 2OH-1 7. 17. a 18. 0000012097 00000 n Acid-base Theories and Conjugate Acid-base Pairs This lesson focuses on the different acid-base theories as well as conjugate acid-base pairs. Ca(OH) 2. 0000012680 00000 n pOH: 2.7 pH: 11.3 5) What is the pH and pOH of a solution with a volume of 5.4 L that contains 15 grams of hydrochloric acid and 25 grams of nitric acid? 0000021358 00000 n Chlorous acid HClO 2 7. 0000003284 00000 n Initial pH This is always determined based solely on the initial concentration of the acid or base being titrated. For this type of question you have to know the approximate pKa values discussed in class and have an idea of what they mean in terms of relative acid strength and also relative base strength. �71O�͉`c�����f��KM��TW��Nf��� 5���M�K��25s4����h-O��j���Sobnco��fcei(���-)+m��)pp�0��6)�,��Ho�����0q�T6QV��V��~�i�ړ�p�FW���7��;Zv�wYW�v̟�`^�Q���[kX�����Yf�ծ��!��lm�PX\o�a��eZḢs�E+�._���ZSΡ.��̶X�nYUAO�eaq�#Ч�]���̂�;7�n`[�ek+K +�F�m�B�W��[S�]�S�haY�Pl^ag�a 4���JJJ�@��� p)����Wt� X� (��c��^�*� lp���&�Эad�a7#P��dFA!�{����΀�:�'ǀ�7o�3`�ej0t�!xA��[�{�סi�f�ɨ7n����"8���A"i%W����{�%� ���|�waEk��b%kFL�9������ ��x�ԷYǞSu8J�ՙ/BSg85�e. e. As the pH increases the solution becomes less acidic and more alkaline. NaOH is a Brønsted-Lowry base because it accepts H+1 ions from acids. Without making any simplifying assumptions, determine the [H 3 O +] and pH of a 0.0010 M weak acid solution with K a = 9.5 x 10 –5. Carbon dioxide and water CO2 + H2O ( H2CO3 Acid anhydride b. How is this soup likely to taste? Acids versus bases 1. If it is a strong acid or base, how much do they ionize in solution? 0000005927 00000 n a. TASK 1 – Bronsted-Lowry acids & bases 1 Acid = H2O, base = NH3 2 Acid = HCl, base = H2O 3 Acid = HCOOH, base = KOH 4 Acid = HCl, base = CH3COOH 5 Acid = HCl, base = NH3 6 Acid = HCO3 - , base = OH- 7 Acid = H+ , base = HCO3 - 8 Acid = H2SO4, base = HNO3 TASK 2 – pH of strong acids Name 2 strong bases and write their formulas. Using K a or pK a to Calculate [H+] and/or pH; using pH to calculate K a or pK a p5 Conceptual Questions. 3719 Acids and Bases Worksheet - Peter Norris YSU. 2. 0000004114 00000 n Label the acid, the base, the conjugate acid, and the conjugate base. This worksheet for checking understanding of core concepts such as acid base nature, strong and weak acid, pH and tests for acid and base. To compare two strong acids or two strong bases, one would compare the Ka and Kb values to determine which would be a stronger electrolyte. CHE 108 Acids and Bases Worksheet 1) List the 6 strong acids… Download. The pH of a sample of vegetable soup was found to be 6.5. Figure 14.8. An acid donates a proton to become a conjugate base. Created: Feb 25, 2016. 0000012271 00000 n As the pH increases the hydroxide ion decreases. 0000067195 00000 n Acids Bases definition pH what to look for in chemical formula production of ions electrical conductivity taste touch examples 2. Explain this, based on the definitions of acids and bases that we discussed in class. d. They increase the concentration of hydroxide ions in aqueous solution. Classify each of the following as an acid or a base. 301 0 obj <> endobj xref 301 78 0000000016 00000 n 5. 0000040818 00000 n Every mole of acid or base will produce one mole of H 3O + or OH-. Their water solutions are called aqueous acids. %PDF-1.6 %���� How many grams of HCl would need to be added to that swimming pool to bring the pH down from 7 to 4? 0000005661 00000 n Name 4 weak acids and write their formulas. 0000057736 00000 n HNO3 and NO3-1 make one pair OH-1 and H2O make the other. 3. 0000020853 00000 n 0000007085 00000 n 0000015865 00000 n Acid Nomenclature Worksheet KEY Write the formula for each of the acids listed below: 1. Answer. When an acid is combined with a base, neutralization occurs. Download Acid And Base Worksheet Answer Key PDF. The larger the K value the stronger the electrolyte. 1.) Strong acids and bases would be stronger electrolytes because they produce more ions in solution than weak acids and bases. 0000004313 00000 n Name 3 strong acids and write their formulas. What makes an acid strong? If one was comparing two strong acids or two strong bases, how would they determine which solution would produce a stronger electrolyte solution? READ PAPER. Exception: Bases formed with Group II cations will form two moles of OH-for every mole of base, e.g. 0000019249 00000 n Soluble bases are called alkalies, e.g. Borane is a Lewis base, but a negligibly strong Brønsted-Lowry base. 0000017472 00000 n b. 0000009154 00000 n 0000020393 00000 n 6) Write the names for the following acids and bases: a) KOH potassium hydroxide b) H2Se hydroselenic acid c) C2H3O2H acetic acid d) Fe(OH)2 iron(II) hydroxide e) HCN hydrogen cyanide or hydrocyanic acid 7) Write the formulas for the following chemical compounds (remember, you’ve still got a pop quiz coming up before the end of next week!) 6. View EA05 - Acids and Bases - Worksheet - Google Docs.pdf from CHEMISTRY 2020 at York University. 1. Acid and Base Worksheet -Answers. Worksheet – Bronsted-Lowry Acids and Bases Name_____ Period _____ Date_____ Identity the conjugation acid-base pairs in the following reactions. 0000003680 00000 n c. 0000060358 00000 n 0000006721 00000 n 0000019961 00000 n 0000067974 00000 n In the Brønsted–Lowry definition of acids and bases, an acid _____ a. is a proton donor. 0000009106 00000 n However, each of the three theories describes what a base is in different terms. 0000037576 00000 n 0000053540 00000 n Seltzer water and all sodas contain a very mild (acid/base) known as _____. Using the following k values, label the k values for each reaction: (ka1 = 5 x 10-3, ka2 = 8 x 10-8, ka3 = 6 x 10-10) H3AsO4(aq) (( H2AsO4-1(aq) + H3O+1(aq) ka1 = 5 x 10-3 H2AsO4-1(aq) (( HAsO4-2(aq) + H3O+1(aq) ka2 = 8 x 10-8 HAsO4-2(aq) (( AsO4-3(aq) + H3O+1(aq) ka3 = 6 x 10-10 9) Using the following Ka values, place the following acids in order of increasing acid strength. Nitric acid HNO 3 2. ____ 14. pH: 2.9 pOH: 11.1 2) What is the pH and pOH of a 2.34 x 10-5 NaOH solution? 0000006282 00000 n 0000069293 00000 n A stronger acid loses its proton more readily than a weaker acid and a stronger base gains a proton more readily than a weaker base. For this type of question you have to know the approximate pKa values discussed in class and have an idea of what they mean in terms of relative acid strength and also relative base strength. pull hydrogen atoms away from HCl molecules. Acid and Base Worksheet -Answers. 0000014905 00000 n State several properties of acids and 0000004935 00000 n 0000014094 00000 n Subscribe for many more exercises with answers. hcl is an example of an arrhenius acid and naoh is an example of an arrhenius base. 0000067014 00000 n Acid And Base Worksheet Answer Key Acid And Base Worksheet Answer Key Intro To Acids & Bases Worksheet base is a substance that when added to water increases the concentration of oh-ions present. Download Full PDF Package. An example of each typ of Acid base reaction is shown below. 0000015195 00000 n 0000005282 00000 n 18. Label the acid, the base, the conjugate acid, and the conjugate base. 0000069862 00000 n Sulfurous acid H 2 SO 3 6. 0000016826 00000 n What makes a base strong? 0000010126 00000 n b. Info. Acid and Base Worksheet - Answers. 0000057683 00000 n 0000016257 00000 n Arrhenius reaction: NaOH + HCl H 2 O + NaCl Bronsted Lowry reaction: NH 3 + HCl NH 4 + + Cl-Hence, an Arrhenius acid and base are always a Bronsted Lowry acid and base, but a Bronsted Lowry acid and base is not always an Arrhenius acid and base… 0000018606 00000 n 0000013806 00000 n Digestive fluids in the body are acidic and must be neutralized by buffers. Bases taste bitter and feel slippery. 0000018553 00000 n 8) Write the dissociation reactions for the polyprotic acid, Arsenic acid (H3AsO4). View Acids and Bases Worksheet.pdf from CHEM 108 at Borough of Manhattan Community College, CUNY. ��q43�����0����J0 a) ammonium sulfate (NH4)2SO4 b) cobalt (III) nitride CoN c) carbon disulfide CS2 d) aluminum carbonate Al2(CO3)3 e) chlorine Cl2 8) Write the conjugate acid for each of the following: a. HPO4-2 b. NO2-1 c. HS-1 d. S-2 a. H2PO4-1 b. HNO2 c. H2S d. HS-1 17. What makes an acid weak? Acids and Bases Lesson Plan Jerel Ray Perez Anderson High School Pre‐AP Chemistry 90 minutes Objective Student will formulate their own learning of acids and bases by completing a writing assignment tying previous knowledge of chemistry to new concepts sodium hydroxide (NaOH). x�b```f``_������� ̀ �l,t�0˽t�.斜4e� f?�!��{�7���@� �`����c��dQ�JR������Pb��L As the pH increases the hydronium ion concentration decreases. 0000063514 00000 n Chloric acid HClO 3 3. Conjugate Acid Base Pairs Name _____ Chem Worksheet 19-2 base acid c. acid c. base Acid and Base Worksheet 1) Using your knowledge of the Brønsted-Lowry theory of acids and bases, write equations for the following acid-base reactions and indicate each conjugate acid-base pair: a) HNO3 + OH- b) CH3NH2 + H2O c) OH-+ HPO 4-2 2) The compound NaOH is a base by all three of the theories we discussed in class. 3) When hydrogen chloride reacts with ammonia, ammonium chloride is formed. Name 1 weak base and write its formula. pH: 1.6 pOH: 12.4 4) What is the pH and pOH of a solution that was made by adding 400 mL of water to 350 mL of 5.0 x 10-3 M NaOH solution? hcl h+ + 0000015480 00000 n SCH4U1 EA05 Name: Date: Acids and Bases - Worksheet 1. a. Write the equation for this process, and indicate which of the reagents is the Lewis acid and which is the Lewis base. 0000029970 00000 n c. As the pH increases the Kw of water remains the same. The chemical formula for this substance is _____. 0000017251 00000 n The LibreTexts libraries are Powered by MindTouch ® and are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. 0000049368 00000 n Label the acid, base, conjugate acid, and conjugate base in the following reactions. Hydrochloric acid HCl 8. A short summary of this paper. pH Calculations; Relationships between pH and pOH p4 Answers p12 K a: Sense + Calculations. STRONG acids & bases COMPLETELY ionize (all break apart) in a solution 8. &. 0000004013 00000 n Worksheet 23 – Strong Acid/Strong Base Titrations A. About this resource. 4. Author: Created by husain1pipl. ____ 13. Answer. a. HCl + NH3 ( NH4Cl NH3 is a Lewis base because it uses its lone pair electrons to pull a hydrogen atom from hydrochloric acid. 0000004213 00000 n Bases contain more OH- ions than H3O+ ions. 2. (Kw = Ka x Kb) ClO4-1, F-1, CH3OO-1, CN-1 11) Indicate whether the following salts will produce an acidic, basic, or neutral solution when dissolved in water. 0000069555 00000 n 0000010870 00000 n Acetic acid HC 2 H 3 O 2 4. HCl is a Lewis acid because it accepts electrons from NH3 when the H is transferred.HHH 4) Write an equation for each of the following reactions and indicate what each reaction produces: (For each of the following oxides, indicate if it is an acid or basic anhydride). Some of the worksheets below are Acids And Alkalis Worksheets with Answers, Identify if a solution is an acid or an alkali , be able to tell if an acid or alkali is weak or strong, several exam style questions, interesting experiments like what happens to pH when an alkali is added to an acid?, … 0000063242 00000 n 0000004651 00000 n Acid Bases IGCSE Chemistry Worksheet and Ans Key. Nitrous acid HNO 2 10. NH 3 + H4 H2S04 + OH- HS04 —1-171-ca Il-determine-if-a H20 ew:s aci se. trailer <<25057D2A689611DD9FED00145163E678>]>> startxref 0 %%EOF 378 0 obj<>stream Vinegar is a(n) (acid/base) finds its way into our diet in ketchup and most pH: 0.82 pOH: 13.18 6) A swimming pool has a volume of one million liters. 6. Strong bases are a. strong electrolytes. a. ID: 1234935 Language: English School subject: Chemistry Grade/level: grade12 Age: 18-18 Main content: Acids and bases Other contents: properties Add to my workbooks (11) Download file pdf Embed in my website or blog Add to Google Classroom 2. Relative Strength of Acids & Bases 25 Conjugate Acid-Base Pair Trends 1. WORKSHEET 8 (NOTES) The pH of a WEAK acid solution Calculate the pH of a 0.500 M aqueous solution of formic acid, HCOOH [K a =1.77 x 10-4] Step 1 List the major species in the solution. d. As the pH increases the product [H3O+][OH-] remains constant. Give an example of alkalies. 12. Identify the INCORRECT statement: a. Neutral b. acidic c. basic " Õ Ö Û Ü İ Ş ß á â ã é ê ë ì ï ò ó ú û ü ı ( ñäÖäȽä­äš†š†raNš†š†rašraš†š $h;'€ h€E= 5�B*OJ QJ ^J phÿ ÿ !h€E= 5�B*H*OJ QJ ^J phÿ 'h;'€ h€E= 5�B*H*OJ QJ ^J phÿ 'h;'€ h€E= 5�B*H*OJ QJ ^J phÿ $h;'€ h€E= 5�B*OJ QJ ^J phÿ j àğh;'€ h€E= OJ QJ ^J h€E= H*OJ QJ ^J h;'€ h€E= H*OJ QJ ^J h;'€ h€E= H*OJ QJ ^J h;'€ h€E= OJ QJ ^J h;'€ h€E= 5�OJ QJ ^J " # Î í ( ) K ‹ Œ ¬ é ê X � Ç Ü I £ ¤ ¥ õ b c ò í ò ò ò ò ò ò ò ò ò ò ò å å å ò ò ò ò ò ò ò ò ò ò

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