Question

An aqueous solution of sodium carbonate absorbs NO and $NO_2$ to give

• A. $CO_2 + NaNO_3$
• B. $CO_2 + NaNO_2$
• C. $NaNO_2 + CO$
• D. $NaNO_3 + CO$

Answer 1

Answer: (C)

$NaNO_2 + CO$

Answer 2

$NO _{2}+ H _{2} O _{2} \rightarrow HNO _{2}$
$Na _{2} CO _{3}+ H NO _{2} \rightarrow{ N a N O}_{2}+ H _{2} O + CO _{2}$
$CO _{2}+ NO \rightarrow CO + NO _{2}$

Thus, $2 Na _{2} CO _{3}+ NO +3 NO _{2} \rightarrow 4 NaNO _{2}+ CO$