Question

Which of the following is an heterogeneous system? a) N2(g) + H2(g) <=====> NH3(g)b) H2(g) + I2(g) <=====> HI (g)c) H2(g) + O2(g) <=====> H2O(l)d) H2(g) + O2(g) <=====> H2O(g)e) H2(g) + Cl2(g) <=====> HCl (g)

Answer 1

What is an heterogeneous system?

By definition is a chemical system that contains various distinct and mechanically separable phases.

If we take a quick look at the reactions that we were given we will see that the is only one where we have more that one phase.

c) H2(g) + O2(g) <=====> H2O(l)

In that case we have in equilibrium two gases with one liquid, in the other ones we only have gases.

So the heterogeneous system is C.