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Question

At what pressure a quantity of gas will occupy a volume of 60 ml if it occupies a volume of $$100 \ ml$$ at a pressure of $$720\ mm$$, assuming the temperature is constant?


A
700 mm
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B
800 mm
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C
100 mm
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D
1200 mm
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Solution

The correct option is D $$1200\ mm$$
Given :- $$ P_{1} = 720$$ mm

$$ V_{1} = 100 ml$$

$$ V_{2} = 60ml$$

$$ P_{2} = ?$$

Temperature is constant

$$ P_{1}V_{1} = P_{2}V_{2}$$

$$ 720 \times 100 = P_{2}\times 60 $$

$$ P_{2} = \cfrac{720\times 100}{60}$$

$$ P_{2} = 1200mm$$ 

Hence, the correct option is $$\text{D}$$

Chemistry

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