Question

H2+I2=2HI+heat,what happen there is increase in pressure

Answer 1

Answer:

Explanation:

When pressure is increased, the volume decreases. The equilibrium will shift in the direction where volume is decreased.

Answer 2

Hi there ,

The pressure only affective if the substances are gases and the number of moles of product differs than of the reactants , the reaction shifted to the lowest number of moles which means the lowest volume

As example

N2(g) + 3H2(g) >< 2NH3(g)

Both reactants and products are gases

Moles of reactants are 4

Moles of products are 2

So the pressure affective and shift the reaction forward to form NH3

In your example pressure is not effictive if Iodine in gaseous state

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