A 8.5 L sample is collected at 45°C. What will the volume be if the temperature is raised to 70°C? End of exam A. 9.2 L B. 13.2 L C. 7.9 L D. 5.5 L

Question

Reed Foster

Chemistry

10 May, 20:11

A 8.5 L sample is collected at 45°C. What will the volume be if the temperature is raised to 70°C? End of exam A. 9.2 L B. 13.2 L C. 7.9 L D. 5.5 L

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Answers (1)

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Leonard Moore · Answer 1

Given:

T1 = 45 °C

V1 = 8.5 L

T2 = 70°C

Required:

V2

Solution:

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.

T1 / V1 = T2 / V2

V2 = T2 x V1 / T1

V2 = 70 x 8.5 / 45

V2 = 13.2 L