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Q.

A 20% (W/W) solution of NaOH is 5 M. The density of the solution is

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a

1 g.ml–1

b

0.5 g.ml–1

c

2 g.ml–1

d

0.25g.ml–1

answer is A.

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Detailed Solution

M=(w/w)%×d×10Mol. wt. d=5×4020×10=1g/ml

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