Mole Ratios Bell Ringer

Front

What are mole ratios used for in chemical reactions?

Back

Mole ratios are used for conversions between moles of reactants and products in a chemical reaction, derived from the coefficients of the balanced chemical equation.

Front

In the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O, what is the mole ratio of ethane (C2H6) to oxygen (O2)?

Back

The mole ratio of ethane to oxygen is 2:7.

Front

In the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O, what is the mole ratio of carbon dioxide (CO2) to water (H2O)?

Back

The mole ratio of carbon dioxide to water is 4:6, which simplifies to 2:3.

Front

What is the mole ratio between nitrogen (N2) and ammonium (NH3) in the reaction N2 + 3H2 → 2NH3?

Back

The mole ratio between nitrogen and ammonium is 1:2.

Front

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

Back

The mole ratio of sodium chloride to calcium phosphate is 6:1.

Front

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

Back

The mole ratio is determined by looking at the coefficients of the balanced chemical equation.

Front

What is the significance of balancing a chemical equation in relation to mole ratios?

Back

Balancing a chemical equation ensures that the law of conservation of mass is followed, allowing for accurate mole ratios between reactants and products.

Front

What is a balanced chemical equation?

Back

A balanced chemical equation has equal numbers of each type of atom on both sides of the equation, reflecting the conservation of mass.

Front

Why is it important to use mole ratios in stoichiometry?

Back

Mole ratios are crucial in stoichiometry for converting between moles of reactants and products, allowing for calculations of yields and reactant requirements.

Front

What is stoichiometry?

Back

Stoichiometry is the branch of chemistry that deals with the relationships between the quantities of reactants and products in a chemical reaction.