Which of the following will cause a decrease in gas pressure in a closed
container?
a. lowering the temperature c. adding more gas
b. reducing the volume d. both a and b

Question

Which of the following will cause a decrease in gas pressure in a closed
container?
a. lowering the temperature c. adding more gas
b. reducing the volume d. both a and b

anonymous · Answer

may I respond? the answer is a (lowering the temperature). Base on the law of ideal gasses PV = nRT, where P is pressure, V volume, n the number of moles, R konstanta and T temperatur. From this formula we can see the pressure conditions P = nRT/V. 
b is wrong because of reducing the volume of means increasing gas pressure. c is also wrong because adding more gas (n) also adding more gas pressure, 
Correct Me If I Wrong ok..,