Question

An increase in pressure in this reaction would:

• A. produce more $I^{-}\left(aq\right)$
• B. produce more $H_2$
• C. not affect the system
• D. drive it to the right

Answer 1

Answer: (C)

not affect the system

The given reaction is :-

$2HI\left(g\right)\rightleftharpoons H_2\left(g\right)+I_2\left(g\right)$

This reaction takes place in either direction without change in no. of moles. So, a/c to Le Chatelier's principle, pressure will have no effect on this equilibrium.