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Percentage Composition

What is the p...

Question

What is the percentage by weight of sulphuric acid if 13 g of $H_{2} S O_{4}$ is dissolved to make 78 g of solution?

23.4

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16.6

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13.2

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Solution

The correct option is C 16.6
Weight of $H_{2} S O_{4}$ = 13 g
Weight of solution = 78 g
Therefore (w/W)% = $\frac{13}{78} \times 100$ $= 16.6$ %

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