Boiling of hard water is helpful in removing the temporary h... | Chemistry | SolveeIt | Solveeit

Today, August 24

Question

Boiling of hard water is helpful in removing the temporary hardness by converting calcium hydrogen carbonate and magnesium hydrogen carbonate to

A

CaCO3 and Mg(OH)2

B

CaCO3 and MgCO3

C

Ca(OH)2 and MgCO3

D

Ca(OH)2 and Mg(OH)2

Answer

CaCO3 and Mg(OH)2

Explanation

Solution

The correct answer is (A): CaCO3 and Mg(OH)2
$Ca(HCO_3)_2$$\stackrel{Δ}{→}$ $CaCO_3$ $↓$ + $H_2O$ + $CO_2$ $↑$
$Mg(HCO_3)_2$$\stackrel{Δ }{→}$ $Mg(OH)_2$ + $2CO_2$$↑$