Case 1 : Common edible salt, NaCl Sodium Chloride ) obtained from seawater or from lakes contains many impurities such as sulphates of sodium and magnesium along with chlorides of calcium and magnesium. The chlorides of these metals are particularly undesirable being deliquescent in nature. A saturated solution of salt in a minimum quantity of water is prepared and insoluble impurities are filtered off. HCL gas is then passed through the saturated solution and the crystals of pure NaCl separate out. the soluble impurities remain in the solution. Pure crystals of NaCl are filtered, washed and dried.
Adding common salt to water will result in :

Options

A. Increase in pH of the water
B. Decrease in pH of the water
C. No change in pH of the water
D. Flames in water

Answer

C