Stoichiometry

Front

What is Stoichiometry?

Back

Stoichiometry is the branch of chemistry that deals with the calculation of reactants and products in chemical reactions based on the conservation of mass.

Front

What is the mole ratio in a balanced chemical equation?

Back

The mole ratio is the ratio of the coefficients of the reactants and products in a balanced chemical equation, which indicates the proportion in which substances react and are produced.

Front

How do you convert grams to moles?

Back

To convert grams to moles, 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

In the reaction 2H2 + O2 -> 2H2O, what is the mole ratio of hydrogen to water?

Back

The mole ratio of hydrogen to water is 2:2 or 1:1.

Front

What is the significance of balancing a chemical equation?

Back

Balancing a chemical equation ensures that the law of conservation of mass is obeyed, meaning the number of atoms of each element is the same on both sides of the equation.

Front

What is the mole ratio of CO2 to CO in the reaction 2CO + O2 -> 2CO2?

Back

The mole ratio of CO2 to CO is 1:1.

Front

True or False: Stoichiometry can be performed without knowing the molar masses of the substances involved.

Back

False. Molar masses are essential for converting between grams and moles.

Front

What is the mole ratio of water to phosphoric acid in the equation P4O10 + 6H2O -> 4H3PO4?

Back

The mole ratio of water to phosphoric acid is 6:4 or 3:2.

Front

In the equation 6CO2 + 6H2O -> C6H12O6 + 6O2, what is the mole ratio of water to oxygen?

Back

The mole ratio of water to oxygen is 6:6 or 1:1.