Question

Each reaction is allowed to come to eqlibrium and then the volume is changed as indicated. Predict the ffect (shift left, shift right, or no effect) of the indicated volume change a. I2(g) <-> 2I (g) (volume is increased) b. 2H2S(g) <-> 2H2(g) + S2(g) (volume is decreased) c. I2(g)+Cl2(g) <-> 2ICL (g) (volume is decreased)

Answer 1

Increasing volume will shift equilibrium in direction where there are more gaseous molecules

decreasing volume will shift equilibrium in direction where there are less gaseous molecules

a. I2(g) <-> 2I (g) (volume is increased)
There are more molecule on right
so, right shift

b. 2H2S(g) <-> 2H2(g) + S2(g) (volume is decreased)
since less molecules are on left
so, left shift

c. I2(g)+Cl2(g) <-> 2ICL (g) (volume is decreased)
since number of gaseous molecules is same on both sides,
no effect