A gas sample is heated from - 20 to 57 C and the volume is increased from 2.00 L to 4.50 L. If the initial pressure is 0.109 atm, what is the final pressure?

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Gigi

Chemistry

15 October, 01:48

A gas sample is heated from - 20 to 57 C and the volume is increased from 2.00 L to 4.50 L. If the initial pressure is 0.109 atm, what is the final pressure?

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Teresa Richards · Answer 1

According to the combined gas laws we can write P1*V1/T1 = P2*V2/T2. we have initial pressure which is P1=0.109atm. Initial vol V1=2litres and initial temperature is - 20 degree C which is 273-20K i. e., T1=253K. and final volume isV2 = 4.50 litres and final temp is 57 degree C which is 273+57K i. e., T2=330K so according to the question we need to find out P2. which is 0.109*2*330:4.50*253=0.0632atm which is the final pressure.