For a gas sample is a container of fixed volume, an increase in temperature resu

Question

For a gas sample is a container of fixed volume, an increase in temperature results in an increase in pressure. For a gas sample in a container of fixed volume, P times T is constant. For a sample of gas at constant temperature. P_1/V_1 = P_2/V_2 When a gas sample in a flexible container at constant pressure at 25 degree C is heated to 50 degree C, its volume doubles. The volume of a sample of gas at constant pressure is directly proportional to its temperature - the higher its temperature, the greater its volume. Raising the diaphragm decreases the volume of the chest cavity and forces air out of the lungs.

Explanation / Answer

a)
since volume is fixed,
P is directly proportioanl to T
increasing T will incraese P
Answer : True

b)
since volume is fixed and gas is also mixed. That is number of moles of gas is also fixed
P/T will be constant
Answer: False

c)
At constant T,
P1*V1 = P2*V2
Answer: false

d)
T1 = 25 oC = 298 K
T2 = 50 oC = 323 K
Vf/Vi = T2/T1 = 323/298 =1.08 times
volume increases 1.08 times
Answer: false

e)
at constant P,
V is directly proportional to P
Answer: True

I am allowed to answer only 4 parts at a time

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