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
B
800 mm
C
100 mm
D
1200 mm

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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