Question

24. Which among the following does not undergoes hydrolysis?
(a) Na2CO3 (b) CH3COOH
(c) CH3COONH4 (d) K2SO4
25. Which of the following acts as both Bronsted and Lewis acid?
(a) Cu+2 (b) SO2
(c) Fe+3 (d) NH4+

Answer 1

Answer:

No.24 is d K2SO4

No.25 is c. Fe³+

Explanation:

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Answer 2

24. K2SO4 (d) does not undergo hydrolysis

25.both Bronsted and Lewis acid is (d) NH4+

Explanation:

1.K2SO4is a salt of strong acid H2SO4and strong base KOH. Such salts do not undergo hydrolysis as they are completely ionized in aqueous solution.

2.K2SO4→K2SO4 is a salt of strong acid H2SO4 and strong base KOH. Such salts do not undergo hydrolysis as they are completely ionized in aqueous solution.

K2SO4 →$2K^{+}$+$SO4^{2-}$

3.Bronsted acids are the compounds which can donate proton (H+) and Lewis acids are the compounds which can donate their loan pair. Therefore, only NH+ ion can act as both Bronsted acid and Lewis acid.

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