Equilibrium Question 95
Question: The $ pH $ of $ 0.1M $ solution of the following salts increases in the order [IIT 1999]
Options:
A) $ NaCl\lt NH_4Cl\lt HCl\lt NaCN $
B) $ HCl\lt NH_4Cl\lt NaCl\lt NaCN $
C) $ NaCN\lt NH_4Cl\lt NaCl\lt HCl $
D) $ HCl\lt NaCl\lt NH_4Cl\lt NaCN $
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Answer:
Correct Answer: D
Solution:
$ NH_4Cl $ undergoes cationic hydrolysis hence pH is $ <7 $ because the solution due to cationic hydrolysis in acids. NaCN undergoes anionic hydrolysis hence pH is >7. HCl is strong acid and NaCl is neutral solution. Hence the pH of given solutions will increases. $ HCl<NaCl<NaCN<NH_4Cl $
BETA
