Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
Which of the solution will be acidic? (1)\[0.1\,M\,FeS{{O}_{4}}\] (2)\[0.1M{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\] (3) \[0.1\text{ }M\,C{{H}_{3}}COONa\] (4)\[0.1\text{ }M\,N{{H}_{4}}OH\]A) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: B
Solution :
\[FeS{{O}_{4}}\]and\[{{(N{{H}_{4}})}_{2}}S{{O}_{4}}\]the salts are of weak bases with strong acids and undergo hydrolysis to give acidic solution, while \[C{{H}_{3}}COONa\](salt of weak acid and strong base) gives basic solution. \[N{{H}_{4}}OH\]is weak base.
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