Give reason: Hard water is not suitable for w | vedclass

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Question

(D) Hard water contains dissolved salts of calcium $(Ca^{2+})$ and magnesium $(Mg^{2+})$ ions. These ions react with soap (sodium stearate,$C_{17}H_{3

Vedclass · Accepted Answer

All of the above.

Vedclass · Answer

(D) Hard water contains dissolved salts of calcium $(Ca^{2+})$ and magnesium $(Mg^{2+})$ ions. These ions react with soap (sodium stearate,$C_{17}H_{35}COONa$) to form an insoluble precipitate known as scum ($ (C_{17}H_{35}COO)_2Ca $ or $ (C_{17}H_{35}COO)_2Mg $). Due to the formation of this insoluble scum,soap is wasted and cannot form lather,which is necessary for cleaning clothes. Therefore,hard water is not suitable for washing clothes.

Give reason: Hard water is not suitable for washing clothes.

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