solve it's urgent Q 37 A bulb with chlorine gas at ambient pressure contains 3 55 g at - Chemistry -

Question

solve it's urgent
Q 37 A bulb with chlorine gas at ambient pressure contains 3 55 g
at t ° C When the bulb is placed in a second thermostat at a
temperature 30 ° C higher and the stopcock of the bulb
temporarily opened (and closed again) to restore the initial
pressure, the bulb is now found to contain 3 2 g of chlorine What
is the value of t ° C?
(a) 2 81 ° C
(b) 8 21 ° C
(c) 8 12 ° C
(d) 1 28 ° C

Ashish Khanna · Accepted Answer

Dear Student,

As we know the gas equation for an ideal gas is PV = nRT
As given in the initial and final pressure is maintained same
so,
n1RT1V1= n2RT2V2As the container remains same hence initial volume and final volume will be same
So,
As initial temperature = t + 273 oK
final temperature = t +30 + 273 oK
Now,
3 55× (t+273)35 5= 3 2 × (t+303)35
5  3 55t + (3 55×273) = 3
2t +(3
2 × 303)          0
35t = 3 2 × 303 - 3
55 × 273          0
35t = 969 6 - 969
15                  t = 0
450
35                    =1
28 oC

So, the correct option is (4)

Regards