Question

$KOH$ is preferably used to absorb $C{O}_2$ gas because :

• A. $KHC{O}_3$ is soluble in water and $NaHC{O}_3$ is sparingly soluble in water
• B. $KOH$ is cheaper than $NaOH$
• C. $KOH$ is more soluble than $NaOH$ in water
• D. $KOH$ is stronger base than $NaOH$

Answer 1

The correct option is A $KHC{O}_3$ is soluble in water and $NaHC{O}_3$ is sparingly soluble in water

$KOH$ is preferably used to absorb $C{O}_2$ to produce $KHC{O}_3+H_{2}O$
$KOH+CO2\to KHC{O}_3+H_{2}O$
$KOH$ is preferably used to absorb $C{O}_2$ gas because $KHC{O}_3$ whic is formed is soluble in water and $NaHC{O}_3$ is sparingly soluble in water.
Hence, option A is correct.