"Following the reaction of zinc with hydrochloric acid, a secondary reaction can occur if a product of the first reaction is ignited. Write the complete reactions for both reactions."

Question

"Following the reaction of zinc with hydrochloric acid, a secondary reaction can occur if a product of the first reaction is ignited. Write the complete reactions for both reactions."
"If 2.75g zinc with 0.15 moles HCL, how much flammable product can be collected?"
I know one of the equations but i have no clue how to write the heated formula?

DrBob222 · Answer

Zn(aq) + 2HCl(aq) ==> ZnCl2(aq) + H2(g)

Second reaction is burning H2.
2H2(g) + O2(g) ==> 2H2O
Usually we show heat by place a delta sign over the arrow. That can't be done on these boards; an alternative way is
2H2 + O2 + heat==> 2H2O