To an equilibrium mixture of 2SO2(g) + O2(g) leftharpoons 2SO3(g) some helium, an inert gas, is added at constant volume. The addition of helium causes the total pressure to double. Which of the following is true?

Question

To an equilibrium mixture of 2SO2(g) + O2(g) leftharpoons 2SO3(g) some helium, an inert gas, is added at constant volume. The addition of helium causes the total pressure to double. Which of the following is true? (A) The concentration of the three gases is unchanged (B) The concentration of sulphur trioxide increases (C) The number of moles of sulphur trioxide increases (D) The concentration of sulphur dioxide increases

Tardigrade Admin · Accepted Answer

As volume remains constant, the concentration of the three gases will remain unchanged on adding helium.

Q. To an equilibrium mixture of 2SO2​(g)+O2​(g)⇌2SO3​(g) some helium, an inert gas, is added at constant volume. The addition of helium causes the total pressure to double. Which of the following is true?

The concentration of the three gases is unchanged

The concentration of sulphur trioxide increases

The number of moles of sulphur trioxide increases

The concentration of sulphur dioxide increases

As volume remains constant, the concentration of the three gases will remain unchanged on adding helium.

Q. To an equilibrium mixture of
$2 S O_{2} (g) + O_{2} (g) ⇌ 2 S O_{3} (g)$
some helium, an inert gas, is added at constant volume. The addition of helium causes the total pressure to double. Which of the following is true?