A) \[{{P}_{2}}{{O}_{5}}+2{{H}_{2}}O\xrightarrow{{}}{{H}_{4}}{{P}_{2}}{{O}_{7}}\]
B) \[2AgN{{O}_{3}}+BaC{{l}_{2}}\to 2AgCl+Ba{{(N{{O}_{3}})}_{2}}\]
C) \[BaC{{l}_{2}}+{{H}_{2}}S{{O}_{4}}\xrightarrow{{}}BaS{{O}_{4}}+2HCl\]
D) \[Cu+2AgN{{O}_{3}}\xrightarrow{{}}2Ag+Cu{{(N{{O}_{3}})}_{2}}\]
Correct Answer: D
Solution :
\[\overset{0}{\mathop{C}}\,u+2\overset{+1}{\mathop{A}}\,gN{{O}_{3}}\xrightarrow{{}}\overset{+2}{\mathop{C}}\,{{(N{{O}_{3}})}_{2}}+2\overset{0}{\mathop{A}}\,g\] This reaction is an example of redox reaction in which Cu is being oxidised to\[C{{u}^{2+}}\]while\[A{{g}^{+}}\]is getting reduced to\[Ag\].
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