Question

When a 1.0 mole of zinc metal reacts with excess HCl, how many moles of H2 should be produced? The balanced equation is:
Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)

Answer 1

when 1 mole of zinc metal reacts with EXCESS amount of hcl ,then we have to look at the LIMITING FACTOR that is zinc metal...So according to the above equation only 1 mole of h2 is formed.