Assuming that the degree of hydrolysis is sma | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Sodium acetate is a salt of a strong base $(NaOH)$ and a weak acid $(CH_3COOH)$.The formula for the $pH$ of a salt of a strong base and a weak aci

Vedclass · Accepted Answer

$9$

Vedclass · Answer

(D) Sodium acetate is a salt of a strong base $(NaOH)$ and a weak acid $(CH_3COOH)$.The formula for the $pH$ of a salt of a strong base and a weak acid is given by:$pH = 7 + \frac{1}{2}pK_a + \frac{1}{2} \log c$Given:$c = 0.1 \ M = 10^{-1} \ M$$K_a = 1.0 	imes 10^{-5}$Step $1$: Calculate $pK_a$$pK_a = - \log K_a = - \log (10^{-5}) = 5$Step $2$: Calculate $\log c$$\log c = \log (10^{-1}) = -1$Step $3$: Calculate $pH$$pH = 7 + \frac{1}{2}(5) + \frac{1}{2}(-1)$$pH = 7 + 2.5 - 0.5$$pH = 9.0$

Assuming that the degree of hydrolysis is small,the $pH$ of $0.1 \ M$ solution of sodium acetate $(K_a = 1.0 \times 10^{-5})$ will be

Similar Questions

Calculate the degree of hydrolysis of a salt formed from $0.1 \ N$ $NH_4OH$ and $0.1 \ N$ $HCN$. Given $K_a = 10^{-5}$ and $K_b = 10^{-5}$.

Which of the following compounds give a basic solution on hydrolysis?
$(1)$ $NH_4Cl$
$(2)$ $K_2CO_3$
$(3)$ $Na_2B_4O_7 \cdot 10 H_2O$
$(4)$ $NaCl$

The hydrolysis of sodium carbonate involves the reaction between

The aqueous solution of aluminium chloride $(AlCl_3)$ is acidic due to:

Which of the following salts turns red litmus blue in its aqueous solution?

Vedclass Test Series

Exam Paper Generator

Online Exam Module