The molar volume of hydrogen can be determined using the reaction of zinc metal and acid,a...

The molar volume of hydrogen can be determined using the reaction of zinc metal and acid,

as shown in Figure 11.24. When the reaction is complete, what does the space above the water in the graduated cylinder contain?

(a) H2(g), Zn2+(aq), and H2O(g)

(b) H2(g) and H2O(g)

(c) H2(g), H2O(g), and air