Answer:

Magnesium Chloride ( ) upon treatment with slaked lime( Ca ( OH ) 2 ) results in the formation of Magnesium hydroxide( Mg ( OH ) 2 ) and Calcium chloride( ) MgCl 2 ( aq ) Magnesium chloride + Ca ( OH ) 2 ( s ) Slaked lime → Mg ( OH ) 2 ( s ) Magnesium hydroxide + Ca ( Cl ) 2 ( aq ) Calcium chlorides.

[tex] \red{ \rule{200pt}{2pt}}[/tex]

राधे राधे

SORRY FOR INCONVENIENCE

MY PREVIOUS ANSWER WAS INCOMPLETEED

SOLUTION

1) TREATED WITH SLAKED LIME

Permanent hard water contains calcium and magnesium ions in the form of bicarbonates, sulfates, and chlorides.

When slaked lime (calcium hydroxide) is added to permanent hard water, the calcium and magnesium ions react with the hydroxide ions to form insoluble carbonates and hydroxides.

REACTION

[tex] \orange{ \sf \: Ca(HCO_3)_2 + Ca(OH)_2\:➞\:2CaCO_3 + 2H_2O }[/tex]

[tex] \orange{ \sf \: Mg(HCO_3)_2 + Ca(OH)_2 \: ➞ \: MgCO_3 + CaCO_3 + 2H_2O }[/tex]

2) TREATED WITH WASHING SODA

Washing soda (sodium carbonate) also reacts with the calcium and magnesium ions in permanent hard water to form insoluble carbonates.

REACTION

[tex] \orange{ \sf \: Ca(HCO_3)_2 + Na_2CO_3 \: ➞ \:CaCO_3 + 2NaHCO_3 }[/tex]

[tex] \orange{ \sf \: Mg(HCO_3)_2 + Na_2CO_3 \: ➞ \: MgCO_3 + 2NaHCO_3 }[/tex]