Question

Bleaching powder is obtained by the interaction of ${Cl}_2$ with:

• A. dilute solution of $Ca{\left(OH\right)}_2$
• B. concentrated solution of $Ca{\left(OH\right)}_2$
• C. dry CaO
• D. dry slaked lime

Answer 1

The correct option is A dilute solution of $Ca{\left(OH\right)}_2$

Bleaching powder is obtained by the interaction of chlorine with a dilute solution of $Ca(OH{)}_2$
Bleaching powder has the molecular formula $CaO{Cl}_2$
leaching powder is $Ca(OCl{)}_2\cdot CaC{l}_2\cdot Ca(OH{)}_2\cdot H_{2}O$
It is obtained by the action of $chlorine$ on $slakedlime$
$3Ca(OH{)}_2+2C{l}_2\underset{{35}^{o}C}{\overset{below}{\to }}Ca(OCl{)}_2\cdot CaC{l}_2\cdot Ca(OH{)}_2\cdot H_{2}O+H_{2}O$