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In the reaction 2H2 + O2 → 2H2O, if you start with 3 moles of O2, how many moles
In the reaction 2H2 + O2 → 2H2O, if you start with 3 moles of O2, how many moles of H2 are required?
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Practice Questions
1 question
Q1
In the reaction 2H2 + O2 → 2H2O, if you start with 3 moles of O2, how many moles of H2 are required?
3 moles
6 moles
1.5 moles
4 moles
Show Solution
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According to the stoichiometry, 1 mole of O2 requires 2 moles of H2. Therefore, 3 moles of O2 will require 6 moles of H2.
Questions & Step-by-step Solutions
1 item
Q
Q: In the reaction 2H2 + O2 → 2H2O, if you start with 3 moles of O2, how many moles of H2 are required?
Solution:
According to the stoichiometry, 1 mole of O2 requires 2 moles of H2. Therefore, 3 moles of O2 will require 6 moles of H2.
Steps: 5
Show Steps
Step 1: Look at the chemical equation: 2H2 + O2 → 2H2O.
Step 2: Identify the ratio of O2 to H2 in the equation. It shows that 1 mole of O2 needs 2 moles of H2.
Step 3: Since you have 3 moles of O2, multiply the number of moles of O2 by the ratio of H2 needed for each mole of O2.
Step 4: Calculate: 3 moles of O2 × 2 moles of H2 per mole of O2 = 6 moles of H2.
Step 5: Conclude that you need 6 moles of H2 for 3 moles of O2.
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