Mole Ratio Notes

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Complete the mole ratio between oxygen and hydrogen using the balanced chemical equation for the formation of water.



2 H₂(g) + O₂(g) → 2 H₂O



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mol O₂ : ​

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mole H₂

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1

2

0

3

4

5

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Complete the mole ratio between nitrogen and ammonia below using the balanced chemical equation for the formation of ammonia.



N₂(g) + 3 H₂(g) → 2 NH₃



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: ​

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Complete the mole ratios below using the balanced chemical equation for the reaction between magnesium and nickel(III) nitrate.



3 Mg(s) +  2 Ni(NO₃)₃(aq) →  3 Mg(NO₃)₂(aq) +  2 Ni(s)



The mole ratio between magnesium and nickel is​

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: ​

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.

The mole ratio between nickel(III) nitrate and magnesium nitrate is ​

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: ​

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Mole ratios are important because they are always the same for a reaction.

This means that we can use mole ratios to calculate how many moles of reactants are needed for a reaction, as well as, how much product will be formed.

This is used in out everyday life, like having your car tell you how many miles you have left to drive before your gas runs out.

Importance

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How many moles of ammonia is formed by completely reacting 9.00 moles of hydrogen?

mol NH₃

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Drag the coefficients needed to correctly balance the synthesis reaction between nitrogen and hydrogen producing ammonia.



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​N₂(g) + ​

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H₂(g) → ​

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NH₃(g)

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2

3

1

5

4

6

7

8

9

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How many moles of nitrogen are needed to react with hydrogen to produce 0.5 moles of ammonia?

mol N₂