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  4. The molarity of pure water is:

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Q. The molarity of pure water is:

JIPMERJIPMER 2003Solutions

Solution:

Molarity of pure water $=55.6$
At $25^{\circ} C$, density of water $=1\, gram / ml$
$1 g =1 \,ml$
So, $1000\, g =1000\, ml$
Number of moles of water $=\frac{1000}{18}=55.55 \,mol$
Molarity of water $=\frac{55.6}{1 \,L }=55.55\, M$