Question

9. Mg + HNO3 → Mg(NO3)2 + H2⬆️​

Answer 1

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Type of Chemical Reaction: For this reaction we have a single displacement reaction.

Balancing Strategies: In this single displacement reaction the Mg replaces the H in the HNO3. This is a fairly straightforward reaction to balance.

The balanced equation can be written as

Mg + 2HNO3 → Mg(NO3)2 + H2

Magnesium + Nitric acid → Magnesium nitrate + Hydrogen gas

There are 2 molecules of nitric acid each acid has one hydrogen so two molecules of nitric acid is 2 hydrogens. There are 2 molecules of nitric acid each acid has one nitrogen so two molecules of nitric acid is 2 nitrogens. There are 2 molecules of nitric acid each acid has 3 oxygens so two molecules of nitric acid is 6 oxygens.

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