Question

Which of the following is buffer solution?

1) CH3COONa + NaCl in water

2) CH3COOH +HCl in water

3) NH4Cl + NH4OH in water

4) HCl + NH4Cl in water​

Answer 1

Answer:

3

Explanation:

dissociation of molecules will lead to form basic buffer solution

Answer 2

Answer:

1) CH3COONa + NaCl in water

Explanation:

Buffer solutions resist a change in pH when small amounts of a strong acid or a strong base are added (Figure 1). A solution of acetic acid and sodium acetate (CH3COOH + CH3COONa) is an example of a buffer that consists of a weak acid and its salt.  Hence, CH3COOH + CH3COONa is a buffer solution.So, option 1 is the correct option.

Note- Acidic buffer solutions are generally made from a weak acid and one of its salts-often a salt of sodium.

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