Which salt does not produce hardness in water | vedclass

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Question

(D) Hardness in water is primarily caused by the presence of dissolved salts of calcium and magnesium,specifically their chlorides,sulfates,and bicarb

Vedclass · Accepted Answer

$MgCO_3$

Vedclass · Answer

(D) Hardness in water is primarily caused by the presence of dissolved salts of calcium and magnesium,specifically their chlorides,sulfates,and bicarbonates. $MgCO_3$ (magnesium carbonate) is practically insoluble in water. Since it does not dissolve to release $Mg^{2+}$ ions in significant amounts,it does not contribute to the hardness of water.

Which salt does not produce hardness in water?

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