CHEM 18 Quiz: GENERAL CHEMISTRY_QUIZ 1_ACIDS AND BASES

• School: University of the Philippines Los Baños
• Department: Chemistry
• Course: CHEM 18

Document Summary

Which of the following aqueous solutions is/are acidic: sodium carbonate solution, sodium hydroxide solution, vinegar, all of the above, none of the above. Given below is the equilibrium equation of the triprotic acid, h3po4. Which of the following is the conjugate base of h2po4-: h3po4, hpo42, h3o, po43, none of the above. Calculate the ph of a strong electrolyte solution with [-oh] = 3. 2 x 10-5 m at 25 deg c: 4. 49, -4. 49, -9. 51, 9. 51, 8. 7. Calculate the ph of a strong electrolyte solution with [h3o+] = 5. 7 x 10-4 m at 25 deg c: 2. 11, 5. 65, 1. 23, 10. 76, 3. 24. Calculate the poh of an aqueous solution with ph= 4. 57: 9. 43, 4. 57, 12. 62, 10. 73, 7. 57. Calculate the poh of a solution with [h3o+] = 8. 1 x 10 -9 m at 25 deg c: 3. 21, 5. 91, 8. 09, 9. 28, 10. 50. Answer: a. ch3cooh + h2o (cid:8310) ch3coo- + h3o+