Which of the following salts turns red litmus | vedclass

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

Question

(C) salt turns red litmus blue if its aqueous solution is basic.$NH_4NO_3$ is a salt of a strong acid $(HNO_3)$ and a weak base $(NH_4OH)$,making it a

Vedclass · Accepted Answer

$NH_4CN$

Vedclass · Answer

(C) salt turns red litmus blue if its aqueous solution is basic.$NH_4NO_3$ is a salt of a strong acid $(HNO_3)$ and a weak base $(NH_4OH)$,making it acidic.$NH_4Cl$ is a salt of a strong acid $(HCl)$ and a weak base $(NH_4OH)$,making it acidic.$NH_4F$ is a salt of a weak acid $(HF)$ and a weak base $(NH_4OH)$. Since $K_a$ of $HF$ $(6.8 	imes 10^{-4})$ is greater than $K_b$ of $NH_4OH$ $(1.8 	imes 10^{-5})$,the solution is acidic.$NH_4CN$ is a salt of a weak acid $HCN$ $(K_a = 4.0 	imes 10^{-10})$ and a weak base $NH_4OH$ $(K_b = 1.8 	imes 10^{-5})$.Since $K_b > K_a$,the aqueous solution of $NH_4CN$ is basic and turns red litmus blue.

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

Similar Questions

Which salt from the following forms an aqueous solution having $pH$ less than $7$?

What is the $pH$ of $1 \, M \, NH_4Cl_{(aq)}$ at $25 \, ^\circ C$?

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 aqueous solutions will have the highest $pH$?

Identify from the following salts an example of a salt of a strong acid and a weak base.

Vedclass Test Series

Exam Paper Generator

Online Exam Module