Mole Ratios

Front

What is a mole ratio?

Back

A mole ratio is a ratio that shows the relative amounts of moles of different substances involved in a chemical reaction.

Front

How do you determine the mole ratio from a balanced chemical equation?

Back

To determine the mole ratio, look at the coefficients in front of each substance in the balanced equation.

Front

In the reaction 3 CaCl₂ + 2 Na₃PO₄ → Ca₃(PO₄)₂ + 6 NaCl, what is the mole ratio of NaCl to Ca₃(PO₄)₂?

Back

6:1

Front

What is the mole ratio of Hg₃(PO₄)₂ to H₃PO₄ in the reaction 3 Hg(OH)₂ + 2 H₃PO₄ → Hg₃(PO₄)₂ + 6 H₂O?

Back

1:2

Front

If there are 5 boys and 7 girls, what is the ratio of girls to boys?

Back

7 to 5

Front

In the reaction N₂ + 3H₂ → 2NH₃, what is the mole ratio between Nitrogen and Ammonium?

Back

1 mole N₂ / 2 moles NH₃

Front

What does a 1:2 mole ratio indicate?

Back

It indicates that for every 1 mole of the first substance, there are 2 moles of the second substance.

Front

What is the significance of mole ratios in stoichiometry?

Back

Mole ratios are used to convert between moles of reactants and products in chemical reactions.

Front

How can you express the ratio of red apples to green apples if there are 4 red apples and 3 green apples?

Back

4 red apples to 3 green apples.

Front

What is the mole ratio of reactants to products in a balanced equation?

Back

The mole ratio of reactants to products is determined by the coefficients in the balanced equation.