A) NO gas is liberated and \[{{\text{I}}_{\text{2}}}\] is set free
B) \[{{\text{N}}_{2}}\]gas is liberated and HI is produced
C) \[{{\text{N}}_{\text{2}}}\text{O}\]gas is liberated and \[{{\text{I}}_{2}}\] is set free
D) \[{{\text{N}}_{\text{2}}}\]gas is liberated and \[\text{HOI}\]is produced
Correct Answer: A
Solution :
When KI is added to acidified solution of sodium nitrite NO gas is liberated and \[{{\text{I}}_{\text{2}}}\] is set free. \[2{{I}^{-}}+4{{H}^{+}}+2NO_{2}^{-}\xrightarrow{{}}2NO+{{I}_{2}}+2{{H}_{2}}O\]
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