Gas A is bubbled through slaked lime when a white precipitate is formed. On prolonged bubbling, the precipitate is dissolved. On heating the resultant solution, the white precipitate reappears with the evolution of gas B. The gases A and B respectively are:

Question

Gas A is bubbled through slaked lime when a white precipitate is formed. On prolonged bubbling, the precipitate is dissolved. On heating the resultant solution, the white precipitate reappears with the evolution of gas B. The gases A and B respectively are: (A)  CO2 and CO (B) CO and CO2 (C) CO and CO (D) CO2 and CO2

Tardigrade Admin · Accepted Answer

According to the question Ca ( OH )2+ underset(A) CO 2 ->[Δ] underset textwhite pptCaCO 3+ H 2 O CaCO 3+ H 2 O + CO 2 arrow underset textsolubleCa ( HCO 3)2 Ca ( HCO 3)2 ->[Δ] CaO + H 2 O + underset(B)2 CO 2 ∴ [ A ] and [ B ] both are CO 2 . g

Q. Gas $A$ is bubbled through slaked lime when a white precipitate is formed. On prolonged bubbling, the precipitate is dissolved. On heating the resultant solution, the white precipitate reappears with the evolution of gas $B$ . The gases $A$ and $B$ respectively are:

$C O_{2}$ and $CO$

$CO$ and $C O_{2}$

$CO$ and $CO$

$C O_{2}$ and $C O_{2}$

According to the question
$C a (O H)_{2} + (A) C O_{2} Δ white ppt C a C O_{3} + H_{2} O$
$C a C O_{3} + H_{2} O + C O_{2} \to soluble C a (H C O_{3})_{2}$
$C a (H C O_{3})_{2} Δ C a O + H_{2} O + (B) 2 C O_{2}$
$∴ [A]$ and $[B]$ both are $C O_{2} . g$

Q. Gas A is bubbled through slaked lime when a white precipitate is formed. On prolonged bubbling, the precipitate is dissolved. On heating the resultant solution, the white precipitate reappears with the evolution of gas B. The gases A and B respectively are:

CO2​ and CO

CO and CO2​

CO and CO

CO2​ and CO2​