Mole Ratios and Mole to Mole Calculations

What can be determined from a balanced chemical equation?

• The Mole Ratio of any two substances

• The Energy released in the reaction.

• The Electron Configuration of all elements in the reaction.

• The Mechanism involved in the reaction.

Mole ratios are obtained from the

• balanced chemical equation

• periodic table

• molar mass of each substance

• The subscripts that balance each charged ion

What coefficient should be used to make the following equation balanced?

N₂ + O₂ → __ NO

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-7

What coefficient should be used to make the following equation balanced?

2 Al + __ Cl₂ → 2 AgCl₃

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS1-7

In the equation;

2 Al₂O₃ → 4 Al + 3 O₂

What is the mole ratio of aluminum to oxygen?

• 4:5

• 3:4

• 4:3

• 2:3

For the Balanced Reaction:

3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe

What is the Ratio of moles of MgO to moles Fe?

• 3 mol Fe / 2 mol MgO

• 2 mol MgO / 3 mol Fe

• 1 mol Fe / 2 mol MgO

• 3 mol MgO / 2 mol Fe

For the Balanced Reaction:

3 Mg + 1 Fe₂O₃ → 3 MgO + 2 Fe

What is the Ratio of moles of Mg to moles Fe?

• 3mol Mg / 2 mol Fe

• 2 mol Mg / 3 mol Fe

• 1 mol Fe / 2 mol Mg

• 3 mol Fe / 2 mol Mg

Tags

NGSS.HS-PS1-7

What is the mole ratio of H₂O to H₃PO₄ in the following chemical equation?

P₄O₁₀ + 6 H₂O → 4 H₃PO₄

• 6:4

• 4:6

• 1:3

• 3:1

N₂ + 3 H₂ → 2 NH₃

What is the mole ratio between Ammonia and Nitrogen in the above reaction?

• 1 moles NH₃ / 2 moles N₂

• 2 moles NH₃ / 1 moles N₂

• 2 moles N₂ / 3 moles NH₃

• 1 moles N₂ / 3 moles NH₃

Which of the following represent a mole ratio between silver nitrate and copper(II) nitrate in the following reaction:

2 AgNO₃ + Cu → Cu(NO₃)₂ + 2 Ag

• 2 mol AgNO₃ / 2 mol Ag

• 2 mol Ag / 2 mol AgNO₃

• 2 mol AgNO₃ / 2 mol Cu(NO₃)₂

• 2 mol AgNO₃ / 1 mol Cu(NO₃)₂

Tags

NGSS.HS-PS1-7