The volume of a given mass of a gas is 300 ml, measured at 798 mm pressure. What will be the volume, if pressure is reduced to 760 mm at constant temperature?

315 ml

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513 ml

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135 ml

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360 ml

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Solution

The correct option is A 315 ml
According to Boyle’s Law
$P_{1} V_{1} = P_{2} V_{2}$ or 798 $\times$ 300=760 $\times V_{2}$
$\Rightarrow V_{2} = \frac{798 \times 300}{760} = 315 m l$

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