MediumChemistryHigh School (9–10)GeneralChemical Reactions › Chemical EquationsChemical Reactions › Energy Changes and CorrosionNumerical
Zinc reacts with sulphuric acid: Zn + H₂SO₄ → ZnSO₄ + H₂.
Contributed by StemPy LabTry it on paper first. A hint, the key idea and the worked solution are here when you need them.
Zinc reacts with sulphuric acid: . What mass of hydrogen is given off when of zinc reacts completely? Use and .
Need a reminder? The key ideaShow
The coefficients of a balanced equation give the ratio of moles. Grams to moles: ; use the ratio; moles to grams: . The total mass of the reactants equals the total mass of the products.
The worked solution
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. Moles. of zinc.
Step 2. Hydrogen. .
Answer: of hydrogen.
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