Unit 4 Stoichiometry Review

Front

What is a limiting reactant?

Back

The reactant that runs out first, preventing any more product from being made and determining how much product will be made.

Front

What are the units for molar mass?

Back

grams/mole

Front

How do you determine the limiting reactant in a chemical reaction?

Back

By comparing the mole ratio of the reactants used in the reaction to the mole ratio required by the balanced equation.

Front

What is the molar mass of sodium (Na)?

Back

22.99 g/mol

Front

What is the molar mass of water (H2O)?

Back

18.02 g/mol

Front

If you have 4 moles of Na and 2 moles of H2O, which is the limiting reactant in the reaction 2Na + 2H2O → 2NaOH + H2?

Back

Neither, as both reactants are present in the exact ratio required.

Front

Calculate the mass of 1 mole of AlCl3.

Back

133.33 g/mol

Front

What is the balanced equation for the reaction of sodium and water?

Back

2Na + 2H2O → 2NaOH + H2

Front

If 120 g of Na reacts completely with water, how many grams of hydrogen gas are produced?

Back

5.27 g

Front

What is stoichiometry?

Back

The calculation of reactants and products in chemical reactions.