11. The equivalence point of a strong base: a. Is at pH-7 b. Is above pH7 c. is

Question

11. The equivalence point of a strong base: a. Is at pH-7 b. Is above pH7 c. is below pH #7 12. The equivalence point of a weak acid: a. is at 7 b. Is above pH 7 c. Is below pH 7 13. The equivalence point of a weak base a. Is at pH-7 b. Is above pH 7 c. Is below pH-7 14. Which solution will have the lowest pH: a. A0.10 M solution of NaC b. A 0.10 M solution of NaCO c. A 0.10 M solution of NaCIO 15. Which solution will have the highest pH: a. A 0.10 M solution of NaCI b. A0.10 M solution of NaCIO c. A 0.10 M solution of Nacio, 16. Based on the common ion effect: The degree of dissociation of the weak electrolyte is reduced The degree of dissociation of the weak electrolyte is increased a. b. 17. Monoprotic acids are weaker acids than diprotic acids a. True b. False 18. All Lewis acids are Bronsted-Lowry acids a. True b. False 19. The percent ionization of a weak acid increases with K, a. True b. False 20. The first dissociation constant of a diprotic acid is always larger than the second. a. True b. False

Explanation / Answer

Ans 11 : b) it is above pH = 7

Usually at the equivalence point the pH of the solution in a titration reaction is equal to 7.

Since here a strong base is used , the titration reaction will lead to formation of a basic solution.

And the pH of a basic solution is always more than 7.

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