Question

The products of the reaction between zinc and sulfuric acid are zinc sulfate, hydrogen sulfide, and water. Balance the equation using the electron-transfer method.

Answer 1

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The balanced equation for the reaction between zinc and sulfuric acid using the electron-transfer method is:

Zn(s) + H2SO4(aq) → ZnSO4(aq) + H2S(g) + H2O(l)

In this reaction, zinc metal (Zn) donates electrons to the sulfate ion (SO4^2-) to form zinc sulfate, while hydrogen ions (H^+) from the sulfuric acid reduce sulfuric acid (SO4^2-) to form hydrogen sulfide gas (H2S). The hydrogen ions also combine with hydroxide ions (OH^-) from the water to form water molecules (H2O).