Assume that you have a cylinder with a movable piston. What would happen to the

Question

Assume that you have a cylinder with a movable piston. What would happen to the gas pressure inside the cylinder if you were to do the following?

Part A.) Triple the Kelvin temperature while holding the volume constant

A. The pressure would increase by a factor of 4

B.The pressure would increase by 1/4

C. The pressure would triple

D. The pressure would be halved.

Part B.) Reduce the amount of gas by 1/3 while holding the temperature and volume constant

A.The pressure would be 1/3 the initial pressure.

B. The pressure would increase by 1.8 times.

C. The pressure would triple

D. There is no volume change

Part C.) Decrease the volume by 40% at constant T

A. The pressure would increase by 1.7 times

B. The pressure would decrease by 1.7 times

C. The pressure would increase on 40% .

D. The pressure would decrease on 40%

Part D.) Halve the Kelvin temperature, and triple the volume

A. The pressure would increase by a factor of 5.

B. The pressure would be 0.13 times the initial pressure

C. The pressure would be 0.17 times the initial pressure

D. The pressure would triple.

Explanation / Answer

Part A PV=nRT so T= 3 times of X then P will be 3 times of P Part b A is correct answer as pressure would be 1/3 the initial pressure. because n is mass/weight so new n will be 1/3 So P will be 1/3 of initial pressure Part C P=nRT/V if volume will decrease by 40 % new volume will be = V - 0.4 V = 0.6 V So P = nRT/ 0.6V which will be increase in 1.7 times for pressure so correct is The pressure would increase by 1.7 times Part D PV=nRT so pressure will be 1/6 of initial C is correct answer. The pressure would be 0.17 times the initial pressure

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