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Question
The method used to remove temporary hardness of water is?
The method used to remove temporary hardness of water is?
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Solution
The correct option is A Clark’s method
Water that contains bicarbonate of calcium and magnesium or of both is called temporary hard water and water that contains chlorides or sulphates of calcium or magnesium or of both is called Permanent hard water.
Clark's method is a process for the large-scale removal of temporary hardness from water. This process involves the addition of a controlled quantity of slaked lime (calcium hydroxide).
Ca(HCO3)2+Ca(OH)2⟶2CaCO3+2H2OMg(HCO3)2+2Ca(OH)2⟶2CaCO3+Mg(OH)2+2H2O
Therefore, the method used to remove temporary hardness of water is Clark’s method.
Hence, option (B) is the required answer.
Water that contains bicarbonate of calcium and magnesium or of both is called temporary hard water and water that contains chlorides or sulphates of calcium or magnesium or of both is called Permanent hard water.
Clark's method is a process for the large-scale removal of temporary hardness from water. This process involves the addition of a controlled quantity of slaked lime (calcium hydroxide).
Ca(HCO3)2+Ca(OH)2⟶2CaCO3+2H2OMg(HCO3)2+2Ca(OH)2⟶2CaCO3+Mg(OH)2+2H2O
Therefore, the method used to remove temporary hardness of water is Clark’s method.
Hence, option (B) is the required answer.
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