mole to mole stoichiometry

Front

What is mole to mole stoichiometry?

Back

Mole to mole stoichiometry is a method used in chemistry to calculate the amount of reactants or products in a chemical reaction based on the balanced equation, using the mole ratio derived from the coefficients.

Tags

NGSS.HS-PS1-7

Front

What is the mole ratio in a balanced chemical equation?

Back

The mole ratio is the ratio of the coefficients of any two substances in a balanced chemical equation, which indicates the proportion of moles of one substance that reacts with or produces moles of another.

Front

Given the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O, how many moles of water are produced from 8.25 moles of CO2?

Back

12.375 moles of H2O are produced.

Tags

NGSS.HS-PS1-7

Front

How do you determine the number of moles of a substance produced in a reaction?

Back

Use the mole ratio from the balanced equation to convert from the known moles of one substance to the unknown moles of another.

Front

In the reaction Fe2O3 + 3H2 → 2Fe + 3H2O, how many moles of iron can be produced from 6 moles of H2?

Back

4 moles of Fe can be produced.

Tags

NGSS.HS-PS1-7

Front

What is the first step in solving a mole to mole stoichiometry problem?

Back

Put the given number of moles in the top left of a T-bar.

Front

What is the mole ratio of the reaction 3 Mg + 1 Fe2O3 → 3 MgO + 2 Fe?

Back

The mole ratio is 3:1:3:2.

Tags

NGSS.HS-PS1-7

Front

How many moles of ethane (C2H6) are needed to produce 13.5 moles of water in the reaction 2 C2H6 + 7 O2 → 4 CO2 + 6 H2O?

Back

4.5 moles of C2H6 are required.

Tags

NGSS.HS-PS1-7

Front

What is the significance of balancing a chemical equation?

Back

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

Tags

NGSS.HS-PS1-7

Front

What is the formula to calculate moles from mass?

Back

Moles = Mass (g) / Molar Mass (g/mol).