A sample of gas occupies 7.80 liters at 425=C2=B0C? What will be the volume = of the gas at 35=C2=B0C if the pressure does not change?

Question

Chemistry

Evangeline Daniel

1 August, 07:16

A sample of gas occupies 7.80 liters at 425=C2=B0C? What will be the volume = of the gas at 35=C2=B0C if the pressure does not change?

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Quintin Brewer · Answer 1

To solve this we assume that the gas inside the balloon is an ideal gas. Then, we can use the ideal gas equation which is expressed as PV = nRT. At a constant pressure and number of moles of the gas the ratio T/V is equal to some constant. At another set of condition of temperature, the constant is still the same. Calculations are as follows:

T1 / V1 = T2 / V2

V2 = T2 x V1 / T1

V2 = 308.15 x 7.80 / 698.15

V2 = 3.44 L