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Yield

80 questions found

Practice Questions

The amount of product predicted by stoichiometry is the:

A. Actual yield

B. Percent yield

C. Experimental yield

D. Theoretical yield ✓

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Jun 23, 2026

If the percent yield is 75%, it means the reaction produced:

A. 75% of the limiting reactant

B. 75% of the excess reactant

C. 75% of the maximum possible amount of product ✓

D. 25% of the theoretical yield

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Jun 23, 2026

A student calculates a theoretical yield of 10g but measures an actual yield of 11g. This result is:

A. Impossible

B. Possible and indicates a highly efficient reaction

C. Possible, but suggests the product is wet or contaminated with impurities ✓

D. A common result for this type of reaction

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Jun 23, 2026

The concept of yield is most important in the field of:

A. Theoretical chemistry

B. Chemical manufacturing and synthesis ✓

C. Physical chemistry

D. Analytical chemistry

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Jun 23, 2026

The “yield” of a reaction always refers to the amount of:

A. Reactant consumed

B. Product formed ✓

C. Catalyst used

D. Energy released

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Jun 23, 2026

The value of the theoretical yield is independent of:

A. The amount of limiting reactant

B. The coefficients in the balanced equation

C. The efficiency of the laboratory procedure ✓

D. The molar mass of the product

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Jun 23, 2026

A reaction that does not go to completion will always have a percent yield that is:

A. 100%

B. Greater than 100%

C. Less than 100% ✓

D. 0%

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Jun 23, 2026

The actual yield is typically given in units of:

A. Moles

B. Grams (mass) ✓

C. Percentage

D. Liters

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Jun 23, 2026

In a chemical reaction, the relationship between the amounts of reactants and the maximum amount of product is called:

A. Stoichiometry ✓

B. Thermochemistry

C. Kinetics

D. Equilibrium

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Jun 23, 2026

Which of the following factors does NOT typically lead to a lower actual yield?

A. The reaction is reversible and does not go to completion

B. Some product is lost during filtration or transfer

C. The reactants were measured perfectly and were 100% pure ✓

D. Unwanted side reactions occur

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Jun 23, 2026

To calculate the theoretical yield, the first essential step is to have a:

A. High percent yield

B. Known actual yield

C. Balanced chemical equation ✓

D. High temperature

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Jun 23, 2026

The actual yield must be determined by:

A. Calculation using mole ratios

B. Estimation

C. Experimentation ✓

D. Guessing

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Jun 23, 2026

If a chemist aims to produce 50 g of a substance (theoretical yield) but only obtains 40 g, the 40 g represents the:

A. Percent yield

B. Actual yield ✓

C. Limiting reactant mass

D. Stoichiometric yield

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Jun 23, 2026

The difference between the theoretical yield and the actual yield is related to the ______ of the reaction.

A. speed

B. reactants

C. products

D. inefficiency or loss ✓

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Jun 23, 2026

The theoretical yield of a chemical reaction represents the:

A. Amount of product actually obtained in a lab

B. Maximum amount of product that can be formed from the given reactants ✓

C. Minimum amount of product that can be formed

D. Amount of limiting reactant left over

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Jun 23, 2026

The actual yield is the amount of product that is:

A. Calculated from the balanced equation

B. Measured experimentally in the laboratory ✓

C. Always equal to the theoretical yield

D. The amount of product that should have formed

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Jun 23, 2026

Percent yield is a measure of the ______ of a chemical reaction.

A. rate

B. efficiency ✓

C. temperature change

D. activation energy

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Jun 23, 2026

The actual yield of a reaction is almost always less than the theoretical yield primarily due to:

A. The law of conservation of mass

B. Incomplete reactions, side reactions, and loss of product during recovery ✓

C. The use of a catalyst

D. The high temperature of the reaction

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Jun 23, 2026

If the actual yield of a product is equal to its theoretical yield, the percent yield is:

A. 0%

B. 50%

C. 100% ✓

D. > 100%

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Jun 23, 2026

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Yield

Practice Questions

The amount of product predicted by stoichiometry is the:

If the percent yield is 75%, it means the reaction produced:

A student calculates a theoretical yield of 10g but measures an actual yield of 11g. This result is:

The concept of yield is most important in the field of:

The “yield” of a reaction always refers to the amount of:

The value of the theoretical yield is independent of:

A reaction that does not go to completion will always have a percent yield that is:

The actual yield is typically given in units of:

In a chemical reaction, the relationship between the amounts of reactants and the maximum amount of product is called:

Which of the following factors does NOT typically lead to a lower actual yield?

To calculate the theoretical yield, the first essential step is to have a:

The actual yield must be determined by:

If a chemist aims to produce 50 g of a substance (theoretical yield) but only obtains 40 g, the 40 g represents the:

The difference between the theoretical yield and the actual yield is related to the ______ of the reaction.

The theoretical yield of a chemical reaction represents the:

The actual yield is the amount of product that is:

Percent yield is a measure of the ______ of a chemical reaction.

The actual yield of a reaction is almost always less than the theoretical yield primarily due to:

If the actual yield of a product is equal to its theoretical yield, the percent yield is:

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