A) \[AgN{{O}_{3}}+NaCl\xrightarrow[{}]{{}}AgCl+NaN{{O}_{3}}\]
B) \[N{{a}_{2}}C{{O}_{3}}+Si{{O}_{2}}\xrightarrow{{}}N{{a}_{2}}Si{{O}_{3}}+C{{O}_{2}}\]
C) \[Ca{{(HC{{O}_{3}})}_{3}}+Ca{{(OH)}_{2}}\xrightarrow[{}]{{}}\] \[2CaC{{O}_{3}}+2{{H}_{2}}O\]
D) \[10HN{{O}_{3}}+{{I}_{2}}\xrightarrow{{}}2HI{{O}_{3}}+10N{{O}_{2}}\] \[+4{{H}_{2}}O\]
Correct Answer: D
Solution :
The following reaction is an example of redox reaction. \[\overset{+5}{\mathop{10HN{{O}_{3}}}}\,+\overset{0}{\mathop{{{I}_{2}}}}\,\xrightarrow[{}]{{}}\overset{+5}{\mathop{2HI{{O}_{3}}}}\,+\overset{+4}{\mathop{10N{{O}_{2}}}}\,+4{{H}_{2}}O\] In this reaction, iodine is oxidised to\[HI{{O}_{3}}\] \[(0\to +5)\]and\[HN{{O}_{3}}\]is reduced to\[N{{O}_{2}}\] \[(+5\to +4).\]
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