HC CH 9.3 Qzz

Multiple Choice

What is true of a stoichiometric mixture?

• all reactants are turned into products

• at least one reactant has "leftover" particles

• all reactants have "leftover particles

• all products are turned into reactants

Multiple Choice

What is true of a limiting reactant mixture?

• all reactants turn into products

• at least one reactant has unused particles after the reaction

• all reactants have unused particles after the reaction

• all products are turned into reactants

Multiple Choice

What do we call the reactant that runs out first in a reaction?

• limiting reactant

• limiting product

• noble reactant

• unfulfilled reactant

• noble product

Multiple Choice

What is the limiting reactant in this reaction?

• H₂

• N₂

• NH₃

• H₂O

Multiple Choice

What is the limiting reactant in this reaction?

Multiple Choice

Which of the following reaction mixtures could produce the greatest amount of product? Each involves the reaction symbolized by the equation:

2H₂ + O₂ → 2H₂O

• 2 moles of H₂ and 2 moles of O₂

• 2 moles of H₂ and 3 moles of O₂

• 2 moles of H₂ and 1 mole of O₂

• 3 moles of H₂ and 1 mole of O₂

• Each produce the same amount of product.

Multiple Select

What information do you need to know in order to determine the mass of product that will be produced?

• Balanced equation

• Molar masses of A, B and the product

• rate of the reaction

• states of matter of reactants and product

Labelling

 The molar mass of A is 10.0 g/mol.

If you have 10.0 g of A, how many moles do you have?

Drag labels to their correct position on the image

1 mol A

1

100

10.0 g A

Multiple Choice

What is the limiting reactant in this reaction?

• A

• B

• C

• There is none.

  (stoichiometric mixture)

Labelling

A + 3B → 2C

Given this equation, how many moles of C will be produced from 1.00 moles of A and 0.500 moles of B?

Drag labels to their correct position on the image

0.500

3 mol B

0.333

2.00

1 mol A

2 mol C

Multiple Choice

What is the theoretical yield?

• The actual amount of product formed in a reaction.

• The maximum amount of product formed when the limiting reactant is completely consumed.

• The percentage of the actual yield to the theoretical yield.

• The amount of reactants used in a reaction.

Multiple Choice

How is percent yield calculated?

• Actual yield / Theoretical yield x 100%

• Theoretical yield / Actual yield x 100%

• Actual yield + Theoretical yield x 100%

• Theoretical yield - Actual yield x 100%

Multiple Choice

What is usually true about the actual yield of a reaction?

• It is always equal to the theoretical yield.

• It is usually greater than the theoretical yield.

• It is usually less than the theoretical yield.

• It is not related to the theoretical yield.

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​= ???

Categorize

Options (3)

Which resource was used to determine the conversion factors?

Periodic Table

Balanced Equation

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