Stoichiometry Mole to Mole

Knowing the mole ratio of a reactant and product in a chemical reaction would allow you to determine:

• the energy released in the reaction.

• the speed of the reaction.

• whether the reaction is reversible.

• the mass of the product produced from a known mass of reactant.

Tags

NGSS.HS-PS1-7

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

• 1 to 6

• 3 to 2

• 4 to 6

• 2 to 3

Tags

NGSS.HS-PS1-7

• 1 : 3

• 2 : 3

• 1 : 1

• 3 : 2

For the reaction represented by the equation N_2+3H_{2 ightarrow ext{2NH}_3}, how many moles of nitrogen (N2) are required to produce 18 grams of ammonia (NH3)?

• 0.9 mol

• 18 grams

• 0.53 mol

• 36 grams

Tags

NGSS.HS-PS1-7

For the reaction represented by the equation Pb\left(NO_3\right)_2+2KI\ \rightarrow\ PbI_2+2KNO_3 how many moles of lead iodide PbI_2 are produced of 300 grams potassium iodide KI when Pb\left(NO_3\right)_2 is in excess?

• 114.78 mol PbI₂

• 0.904 grams PbI₂

• 0.904 mol PbI₂

• 114.78 grams PbI₂

Mole ratios are obtained from the

• balanced chemical equation

• periodic table

• molar mass

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

In the reaction 2 H₂ + O₂ → 2 H₂O what is the mole ratio of oxygen to water

• 1/2

• 2/1

• 3/4

• 4/3

Tags

NGSS.MS-PS1-5

Balance the following reaction :
 
CaC₂(s)   +   H₂O(l)   -->   C₂H₂(g)   +   Ca(OH)₂(aq)

• 2,1,1,1

• 2,1,2,1

• 1,2,1,1

• 1,2,2,2

In the equation 2 Al₂O₃ --> 4 Al + 3 O₂, what is the mole ratio of aluminum to oxygen (aluminum is asked for, oxygen is given)?

• 10/6

• 3/4

• 4/3

• 2/3

Tags

NGSS.HS-PS1-7