18. Ko 1.8 x 10-s for HC2H3O2. Will addition of each of the following to separat

Question

18. Ko 1.8 x 10-s for HC2H3O2. Will addition of each of the following to separate 100. ml samples of 0.10 M NaC2H302 at 25°C cause the pH of the resultant solution to be lower than, higher than, equal to, or cannot be determined compared with the pH of the original 100. mL sample? For each, completely justify your choice. a. Some solid sodium acetate trihydride. b. Some water. c. some 0.10 M HC2H3O2 d. Some glacial acetic acid. e. Some 0.20 M NaC2H302 f. Some 0.010 M NaC2H302 8. Some 0.10 M HCI. h. Some 0.10 M NaOH.

Explanation / Answer

Answer:-

H) Some 0.10 M NaOH.

NaOH + HC2H3O2 ----> NaC2H3O2 + H2O

This can be treated as a buffer solution since we have a weak acid (HC2H3O2) and its conjugate base(NaC2H3O2).

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