Question

1 multiple choice 1 point
which is not a type of yield?
○ percent
○ theoretical
○ limiting reactant
○ actual

2 true or false 1 point
the limiting reactant is the reactant which is not consumed.
○ true
○ false

3 true or false 1 point
the actual yield is the actual amount of product obtained from a chemical equation.
○ true
○ false

Explanation:

Question 1

To determine which is not a type of yield, we analyze each option:

• Theoretical yield is the maximum amount of product predicted by stoichiometry.
• Actual yield is the amount of product actually obtained.
• Percent yield is a ratio of actual to theoretical yield (expressed as a percentage).
• Limiting reactant is the reactant that gets completely consumed and limits the reaction, not a type of yield.

The limiting reactant is the reactant that is completely consumed in a chemical reaction, limiting the amount of product formed. The reactant that is not consumed is the excess reactant. So the statement is false.

Actual yield is defined as the actual amount of product obtained from carrying out a chemical reaction (not just from the equation, but from the actual experiment). However, the statement here says "from a chemical equation" which is slightly misphrased, but the core idea of actual yield being the actual amount obtained is correct. Wait, no—wait, the actual yield is from the experiment, but the statement says "from a chemical equation" which is incorrect? Wait, no, let's recheck. The actual yield is the amount you actually get when you perform the reaction, while the theoretical yield is from the equation. Wait, the statement: "The actual yield is the actual amount of product obtained from a chemical equation." No, that's wrong. Wait, no—wait, maybe I misread. Wait, no: the actual yield is obtained from the experiment, not the equation. So the statement is false? Wait, no, wait the question: "The actual yield is the actual amount of product obtained from a chemical reaction (the experiment), but the statement says 'from a chemical equation'—so that's incorrect. Wait, but maybe the wording is a bit off. Wait, no, let's think again. Theoretical yield is calculated from the chemical equation (stoichiometry), actual yield is what you get in the lab. So the statement says "obtained from a chemical equation"—that's wrong. So the answer is False? Wait, but maybe the question has a typo, but based on the definition: actual yield is the amount of product actually produced in the reaction (experiment), not from the equation. So the statement is false. Wait, but let's check standard definitions. Actual yield: the amount of product actually obtained when the reaction is carried out in the laboratory. Theoretical yield: the amount of product that can be made based on the stoichiometry (from the chemical equation). So the statement here says "from a chemical equation"—so that's incorrect. So the answer is False? Wait, but the option is True or False. Wait, maybe I made a mistake. Wait, the statement: "The actual yield is the actual amount of product obtained from a chemical equation." No, that's wrong. So the answer is False. Wait, but maybe the question meant "from a chemical reaction" (the experiment). If it's a typo, but as per the given statement, it's "from a chemical equation", so the answer is False.
Wait, no, let's check again. Let's see: the actual yield is what you get when you do the reaction. The chemical equation is used to calculate theoretical yield. So the actual yield is not obtained from the equation, but from the experiment. So the statement is false.

Answer:

C. limiting reactant

Question 2