Question

25. One litre of gas A at 2 atm pressure at 27°C and two litre
of gas B at 3 atm pressure at 127°C are mixed in a 4 litre
vessel. The temperature of the mixture is maintained at
327°C. What is the total pressure of the gaseous mixture?
(a) 3.93 atm (b)3.25 atm (c)4.25 atm (d) 6.25 atm​

Answer 1

Answer:

3.25

Explanation:

pA=1 atm (2×1/4×600/300)

pB=2.25 (3×2/4×600/400)

total pressure=(1+2.25) atm= 3.25 atm

Answer 2

Answer:

option-b

Explanation:

GIVEN- One litre of gas A at 2 atm pressure at 27°C and two litre

of gas B at 3 atm pressure at 127°C are mixed in a 4 litre

vessel. The temperature of the mixture is maintained at

327°C

FIND- the total pressure of the gaseous mixture.

SOLUTION- For gas A, the volume increases from one litre tofour litre. This would reduce the pressure but the temperature increases from 300 to 600 K

pA=2×1/4×600/300=1 atm

Similarly, pB=3×2/4×600/400=4/9 atm

So, total pressure is (1+2.25)atm=3.25 atm `

FINAL ANSWER- 3.25 atm

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