Which of the following is true of a limiting reagent? A. It is a reactant B. It controls/stops the reaction C. Its amount is in moles D. It determines the maximum amount of product formed.

## Step 1<br />A limiting reagent is a reactant in a chemical reaction that is completely consumed. This means that it is a reactant, which is option A.<br /><br />## Step 2<br />The limiting reagent determines the maximum amount of product that can be formed in the reaction. This is because the reaction cannot proceed further without the limiting reagent. This is option D.<br /><br />## Step 3<br />The amount of a substance in a chemical reaction is often measured in moles, which is option C.<br /><br />## Step 4<br />However, the limiting reagent does not control or stop the reaction. Instead, it determines the maximum amount of product that can be formed. Therefore, option B is not correct.