Multiple Choice
Which of the following statements best explains why a percent yield of 85% for a chemical reaction is considered reasonable?
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3. Chemical Reactions
Percent Yield
Multiple Choice
Which of the following factors are necessary to determine both the theoretical and actual yield in a chemical reaction?
A
The color change observed during the reaction
B
The balanced chemical equation and the measured amount of product obtained
C
The temperature at which the reaction is performed
D
The type of laboratory equipment used
Verified step by step guidance1
Understand that the theoretical yield is the maximum amount of product that can be formed from the given amounts of reactants, based on the stoichiometry of the balanced chemical equation.
Recognize that to calculate the theoretical yield, you must first have a balanced chemical equation to know the mole ratios between reactants and products.
Use the balanced equation to convert the amount of limiting reactant (usually in moles) to the amount of product expected, which gives the theoretical yield.
Know that the actual yield is the amount of product actually obtained from the experiment, which must be measured experimentally.
Therefore, to determine both theoretical and actual yield, you need the balanced chemical equation (for theoretical yield) and the measured amount of product obtained (for actual yield). Other factors like color change, temperature, or equipment type are not directly necessary for these calculations.
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