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Question

Reason
Calgon forms precipitates with $$Ca^{2+}$$ and $$Mg^{2+}.$$
Assertion
Calgon is used for removing $$Ca^{2+}$$ and $$Mg^{2+}$$ ions from hard water.

A
Both Assertion and Reason are incorrect
B
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
C
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
D
Assertion is correct but Reason is incorrect
Solution
Verified by Toppr

Correct option is D. Both Assertion and Reason are incorrect
Correct Assertion - Calgon mask the properties of $$ Ca^{2+} $$ and $$ Mg^{2+} $$ ions present in water without removing them as precipitates.

Correct Reason - Calgon forms soluble complexes with $$ Ca^{2+} $$ and $$ Mg^{2+} $$ in which properties of these ions are masked.

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