Question

Which one of the following metals cannot evolve $\rightarrow$from acids or $A \rightarrow NH_{4}OH,B \rightarrow NH_{4}Cl$ or from its compounds.

• A. $A \rightarrow CH_{3}COOH,B \rightarrow CH_{3}COONa$
• B. $A \rightarrow KCl,B \rightarrow NH_{4}OH$
• C. $\rightarrow$
• D. $\rightarrow$

Answer 1

Answer: (A)

$A \rightarrow CH_{3}COOH,B \rightarrow CH_{3}COONa$

Answer 2

$Hg$ has greater reduction potential than that of $H^{+}$and hence cannot displace hydrogen from acid.