KMT, Limiting Reagent, and Percent Yield Review

Multiple Choice

According to the Kinetic Molecular Theory, gas particles have a force of attraction between one another.

• True

• False

Dropdown

According to the Kinetic Molecular Theory, gases are in ​

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motion and thus, have a large amount of ​

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energy.

Dropdown

According to the Kinetic Molecular Theory, when compared to their surroundings, gas particles are​

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​ and thus ​

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.

Match

Consider the following image. Match the following images to their names.

Limiting Reagent

Excess Reagent

Product

• Limiting Reagent

• Excess Reagent

• Product

Multiple Choice

MgCO₃ → MgO + CO₂

A decomposition reaction occurs following the formula above. 15.9 g of MgO is recovered at the end of the reaction. If the theoretical yield was calculated to be 17.3 g, what is the percent yield?

• 108.8%

• 43.2%

• 79.3%

• 91.9%

Multiple Choice

MgCO₃ → MgO + CO₂

A decomposition reaction occurs following the formula above. If 25.4 grams of MgCO₃ decomposes, how many grams of CO₂ are made?

• 14.67 g

• 43.50 g

• 13.26 g

• 8.4 g

Multiple Choice

MgCO₃ → MgO + CO₂

A decomposition reaction occurs following the formula above. According to the reaction above, 25.4 grams of MgCO₃ decomposes. If 10.43 grams of CO₂ are collected at the end, what is the percent yield? (Hint: Using your answer from the last question, 13.26 grams, calculate the percent yield.)

• 78.67%

• 56.34%

• 92.11%

• 127.11%