The hardness of water caused by 0.25 moles of MgCl2 is equal to i) The hardness of water caused by 25 grams of CaCO3ii) The hardness of water caused by 0.25 moles of CaCO3iii) The hardness of water caused by 1 moles of CaCO3
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a
only ii is correct
b
i and ii are correct
c
i and iii are correct
d
only i is correct
answer is B.
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Detailed Solution
Same moles of substances causes same degree of hardness.