Limiting Reactant and Percent Yield

Question 1

It was determined that H2 was the limiting reactant. What is the excess reactant?

Revolt · Accepted Answer

oxygen

Question 2

The excess reactant is the reactant that is used up in a chemical reaction.

Revolt · Accepted Answer

not

Question 3

After determining the amount of moles required for one of the reactants, it was shown that [___] was the limiting reactant and [___] was the excess reactant.

Revolt · Accepted Answer

copper

Question 4

After determining the amount of moles required for one of the reactants, it was shown that was the limiting reactant and was the excess reactant.

Revolt · Accepted Answer

sulfur

Question 5

Sam follows the directions on a box of pancake mix. The box says that it makes 10 pancakes, but he is able to make 8 pancakes from the ingredients. In this case, the number 10 represents which type of yield?actual yieldtheoretical yield

Revolt · Accepted Answer

theoretical yield

Question 6

Did you perform the calculations correctly?

Revolt · Accepted Answer

Yes, I got the correct theoretical yield and percent yield.; No, I got the correct theoretical yield but calculated the percent yield incorrectly.; No, I calculated the theoretical yield incorrectly, so my percent yield calculation was also incorrect.; No, I used the correct equations, but I got the wrong answer because of a math error.

Question 7

The balanced chemical equation for the reaction is shown below: CH4 + 2O2 CO2 + 2H2ODid you start with the correct equation? Yes, I started with the correct equation and got the correct percent yield.No, I did not start with the correct equation.Yes, I started with the correct equation but got the incorrect percent yield because of a math error.

Revolt · Accepted Answer

Yes, I started with the correct equation and got the correct percent yield.

Limiting Reactant and Percent Yield Answers

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