Question

When $KI$ is added to acidified solution of sodium nitrite, then

• A. $NO$ gas is liberated and $I_2$ is set free
• B. $N_2$ gas is liberated and $HI$ is produced
• C. $N_{2}O$ gas is liberated and $I_{2}$ is set free
• D. $N_{2}$ gas is liberated and $HOI$ is produced

Answer 1

Answer: (A)

$NO$ gas is liberated and $I_2$ is set free

Answer 2

When $KI$ is added to acidified solution of sodium nitrite NO gas is liberated and $I _{2}$ is set free.
$2 I ^{-}+4 H ^{+}+2 NO _{2}^{-} \longrightarrow 2 NO + I _{2}+2 H _{2} O$