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Manipal MET2012ChemistryHydrogen

Which of the following is responsible for hardness of water?

Options

  1. ACaHCO ₃
  2. BCaCl ₂
  3. CBoth (a) and (b)
  4. DNone of these

Correct answer

C. Both (a) and (b)

Step-by-step solution

Temporary hardness of water is due to the presence of bicarbonates of calcium and magnesium while permanent hardness is due to the presence of soluble chlorides and sulphates of calcium and magnesium.

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