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Assertion : Calgon is used in manufactur...

Assertion `:` Calgon is used in manufacture of soft water being used for laundry purpose.
Reason `: Ca^(2+)` and `Mg^(2+)` ions present in hard water are rendered ineffective by calgon forming their soluble complexes.

Text Solution

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The correct Answer is:
a
`2CaSO_(4)+Na_(2)[Na_(4)(PO_(3))_(6)]rarr Na_(2)[Ca_(2)(PO_(3))_(6)]+2Na_(2)SO_(4)`
`2MgSO_(4)+[Na_(2)(PO_(3))_(6)] rarr underset("Complex salts")([Mg_(2)(PO_(3))_(6)]+2Na_(2)SO_(4))`
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