Mole:Mole Stoichiometry Problems

Front

What is the mole ratio of H2O to H3PO4 in the reaction P4O10 + 6 H2O ⟶ 4 H3PO4?

Back

6 moles P4O10 : 4 moles H3PO4

Front

How many moles of NaCl are produced when 1.7 mole of Na reacts with excess Cl2 in the reaction 2 Na + Cl2 ⟶ 2 NaCl?

Back

1.7 mole

Front

In the reaction 2AlPO4 + 3Ba(OH)2 → 2Al(OH)3 + Ba3(PO4)2, how many moles of aluminum hydroxide are produced from 0.85 moles of barium hydroxide?

Back

0.57 moles

Front

In the reaction 2 C3H8 + 10 O2 → 6 CO2 + 8 H2O, how many moles of CO2 are produced from 0.75 mole of C3H8?

Back

2.25 moles

Front

What is the total number of moles of water needed to make 2.5 moles of C6H12O6 in the reaction CO2 + H2O → C6H12O6 + O2?

Back

15 moles

Front

Define mole ratio in stoichiometry.

Back

The mole ratio is the ratio of the coefficients of any two substances in a balanced chemical equation, used to convert between moles of reactants and products.

Front

What is stoichiometry?

Back

Stoichiometry is the calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

How do you determine the number of moles from mass?

Back

Use the formula: Moles = Mass (g) / Molar Mass (g/mol).

Front

What is the molar mass of water (H2O)?

Back

The molar mass of water is approximately 18.02 g/mol.

Front

Explain the concept of limiting reactant.

Back

The limiting reactant is the substance that is completely consumed in a chemical reaction, limiting the amount of product formed.