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What is the total number of moles of gas produced when 1 mole of CaCO3 decompose

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Question: What is the total number of moles of gas produced when 1 mole of CaCO3 decomposes to form CaO and CO2?

Options:

  1. 0.5 moles
  2. 1 mole
  3. 2 moles
  4. 3 moles

Correct Answer: 2 moles

Solution: 

The decomposition reaction is CaCO3 → CaO + CO2. This produces 1 mole of CaO and 1 mole of CO2, totaling 2 moles of gas.

What is the total number of moles of gas produced when 1 mole of CaCO3 decompose

Practice Questions

Q1
What is the total number of moles of gas produced when 1 mole of CaCO3 decomposes to form CaO and CO2?
  1. 0.5 moles
  2. 1 mole
  3. 2 moles
  4. 3 moles

Questions & Step-by-Step Solutions

What is the total number of moles of gas produced when 1 mole of CaCO3 decomposes to form CaO and CO2?
  • Step 1: Write down the decomposition reaction: CaCO3 → CaO + CO2.
  • Step 2: Identify the products of the reaction. Here, we have CaO and CO2.
  • Step 3: Count the moles of each product. We get 1 mole of CaO and 1 mole of CO2.
  • Step 4: Add the moles of gas produced. 1 mole of CaO + 1 mole of CO2 = 2 moles of gas.
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