The equation for the reversible reaction between hydrogen and iodine is to form hydrogen iodide is shown.
the colours of the reactants and products are shown.
h2(g) + i2(g) < --> 2hi(g)
colourless + purple< --> colourless
the forward reaction is exothermic.
which statement is correct?
a) an increase in pressure has no effect on the equilibrium position.
b) the purple colour fades when the reaction mixture is heated.
c) when equilibrium is reached, both forward and reverse reactions stop.
d) when more hydrogen gas is added, the purple colour increases.