In the reaction 2H2 + O2 → 2H2O, how many moles of O2 are required to completely
Practice Questions
Q1
In the reaction 2H2 + O2 → 2H2O, how many moles of O2 are required to completely react with 6 moles of H2?
2 moles
3 moles
4 moles
6 moles
Questions & Step-by-Step Solutions
In the reaction 2H2 + O2 → 2H2O, how many moles of O2 are required to completely react with 6 moles of H2?
Step 1: Look at the balanced chemical equation: 2H2 + O2 → 2H2O.
Step 2: Identify the ratio of H2 to O2 from the equation. It shows that 2 moles of H2 react with 1 mole of O2.
Step 3: Determine how many moles of O2 are needed for 6 moles of H2. Since 2 moles of H2 need 1 mole of O2, we can set up a proportion.
Step 4: Calculate the number of moles of O2 needed by dividing the moles of H2 by the ratio: 6 moles of H2 ÷ 2 moles of H2 per mole of O2 = 3 moles of O2.
Step 5: Conclude that 3 moles of O2 are required to completely react with 6 moles of H2.
