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In the reaction 2H2 + O2 → 2H2O, what is the ratio of moles of hydrogen to moles

Practice Questions

Q1
In the reaction 2H2 + O2 → 2H2O, what is the ratio of moles of hydrogen to moles of oxygen?
  1. 1:1
  2. 2:1
  3. 2:2
  4. 1:2

Questions & Step-by-Step Solutions

In the reaction 2H2 + O2 → 2H2O, what is the ratio of moles of hydrogen to moles of oxygen?
Correct Answer: 2:1
  • Step 1: Look at the chemical equation: 2H2 + O2 → 2H2O.
  • Step 2: Identify the coefficients in front of H2 and O2. The coefficient for H2 is 2 and for O2 is 1.
  • Step 3: The ratio of moles of hydrogen (H2) to moles of oxygen (O2) is determined by these coefficients.
  • Step 4: Write the ratio using the coefficients: 2 (for H2) to 1 (for O2).
  • Step 5: Simplify the ratio to get 2:1.
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