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Percentage Composition

The w/W

Question

The w/W % of 25 g of calcuim hydroxide in 50 g of solvent is_____ %

A

40

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B

33.33

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C

36.3

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D

30

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Solution

The correct option is B 33.33
Weight of $C a (O H)_{2}$ = 25g

Weight of solution = 75g

Therefore w/W% = $\frac{25}{75} \times 100$ = 33.33%

Hence, the correct option is $B$

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