Limiting Reagent Worksheet
Explore the concept of limiting reagents in chemical reactions with this Grade 9 science worksheet, featuring multiple-choice, fill-in-the-blank, and short-answer questions.
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Limiting Reagent Worksheet
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Read each question carefully and answer to the best of your ability.
1. What is the definition of a limiting reagent?
The reagent that is completely consumed in a reaction.
The reagent that is left over after a reaction.
The reagent that is in excess.
The reagent that speeds up a reaction.
2. In the reaction 2H₂ + O₂ → 2H₂O, if you have 4 moles of H₂ and 1 mole of O₂, which is the limiting reagent?
H₂
O₂
H₂O
Neither
3. The reagent determines the maximum amount of product that can be formed in a chemical reaction.
4. When all of the limiting reagent is consumed, the reaction .
5. Explain how to identify the limiting reagent in a chemical reaction.
6. The excess reagent is always completely used up in a chemical reaction.
True
False
7. Consider the reaction: N₂ + 3H₂ → 2NH₃. If you start with 10 moles of N₂ and 24 moles of H₂:
a) Identify the limiting reagent.
b) Calculate the theoretical yield of NH₃ in moles.
c) How many moles of the excess reagent will remain?