Question

Two solid A and B are present in two different container having same volume and same temperature following equilibrium are established :

In container (1) A(s) D(g) + C(g) PT = 40 atm at equilibrium

In container (2) B(s) E(g) + F(g) PT = 60 atm at equilibrium

If excess of A and B are added to a third container having double the volume and at same temperature then, the total pressure of this container at equilibrium is :

• A. 50 atm
• B. 100 atm
• C. 200 atm
• D. 70 atm

Answer 1

Answer: (A)

50 atm

Answer 2

A(s) X + Y

$\alpha + \beta$

B(s) Y + Z

$\Rightarrow$

$\Rightarrow \quad 2 ( \alpha + \beta ) = 50 \quad \Rightarrow \quad \alpha + \beta = 25$

$\Rightarrow \quad 250 = 25 \alpha \quad \Rightarrow \quad \alpha = 10 , \quad \beta = 15$

$\Rightarrow \quad = \beta ( \alpha + \beta ) = 15 \times 25 = 375$