If a gas sample has a pressure of 30.7 kPa at 273 K, what does the temperature have to decrease to lower the pressure to 28.4 kPa? 253K 268K 262K

Pushp Vashisht asked Mar 14, 2022

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12 votes

If a gas sample has a pressure of 30.7 kPa at 273 K, what does the temperature have to decrease to lower the pressure to 28.4 kPa?

253K
268K
262K

Pushp Vashisht asked Mar 14, 2022

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24 votes

253 K

P1/T1 = P2/T2

P1 = 30.7 kPa
T1 = 273 K
P2 = 28.4 kPa

Solve for T2 —> T2 = P2T1/P1
T2 = (28.4 kPa)(273 K) / (30.7 kPa) = 253 K

Teimuraz answered Mar 17, 2022

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