SATHEE: Equilibrium Question 630

Equilibrium Question 630

Question: 4.5 moles each of hydrogen and iodine heated in a sealed ten litre vessel. At equilibrium, 3 moles of $H I$ were found. The equilibrium constant for $H_{2} (g) + I_{2} (g)$ ⇌ $2 H I (g)$ is [EAMCET 1998]

Options:

A) 1

B) 10

C) 5

D) 0.33

Show Answer

Answer:

Correct Answer: A

Solution:

$H_{2} + I_{2}$ ⇌ 2HI Initial conc. 4.5 4.5 0 x x 2x from question 2x = 3 $x = \frac{3}{2} = 1.5$ So conc. at eqm. $4.5 - 1.5$ of $H_{2}$

$= 4.5 - 1.5$ of $I_{2}$ and 3 of HI $K = \frac{{[H I]}^{2}}{[I_{2}] [H_{2}]} = \frac{3 \times 3}{3 \times 3} = 1$ .

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Equilibrium Question 630

Question: 4.5 moles each of hydrogen and iodine heated in a sealed ten litre vessel. At equilibrium, 3 moles of HI were found. The equilibrium constant for H2(g)+I2(g) ⇌ 2HI(g) is [EAMCET 1998]

Options:

Answer:

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Question: 4.5 moles each of hydrogen and iodine heated in a sealed ten litre vessel. At equilibrium, 3 moles of $H I$ were found. The equilibrium constant for $H_{2} (g) + I_{2} (g)$ ⇌ $2 H I (g)$ is [EAMCET 1998]