Chemistry Chapter 9 Review

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In the reaction represented by the equation A + B → C + D, if there is more reactant B than is required to completely react with all of A, then..

A is the limiting reactant.

Give the correct mathematical expression for determining percentage yield.

Percentage yield = actual yield / theoretical yield x 100

What is meant by ideal conditions relative to stoichiometric calculations?

The limiting reactant is completely converted to product with no losses, as dictated by the ratio of coefficients.

The measured amount of product obtained from a chemical reaction is called the...

actual yield.

The substance that is not completely used up in a chemical reaction is known as the...

excess yield.

The most steps are required to solve stoichiometry problems when the reactant is given in grams and the product is sought in

grams.

The theoretical yield of a chemical reaction is generally

greater than the actual yield.

The substance that restricts the amount of other reactants used in a chemical reaction is known as the...

limiting reactant.

The conversion factor that relates the amounts in moles of any two substances in a chemical reaction is the...

mole ratio.

Are actual yields typically larger or smaller than theoretical yields?

smaller

What function do ideal stoichiometric calculations serve?

They determine the theoretical yield of the products of the reaction.

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

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

If a chemist calculates the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the...

theroretical yield.


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