Question detail
In a chemical reaction, 2 moles of gas A react with 3 moles of gas B to produce 4 moles of gas C. What is the ratio of the volumes of gas A to gas C at room temperature and pressure?
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At a glance
Question
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exam_style
Style
Topic
Use of amount of substance in relation to volumes of gases (chemistry only) (HT only)
Question
In a chemical reaction, 2 moles of gas A react with 3 moles of gas B to produce 4 moles of gas C. What is the ratio of the volumes of gas A to gas C at room temperature and pressure?
Answer
The ratio of the volumes of gas A to gas C is 2:4, which simplifies to 1:2.
Explanation
This question tests the understanding of the relationship between moles and volumes of gases, which occupy the same volume under the same conditions. The answer demonstrates the application of mole ratios from the balanced equation.
Common mistake
Misunderstanding Ratios in Gas-Volume Calculations
Students often confuse the ratios of gases in a balanced equation, leading to incorrect volume calculations.
Carefully analyze the coefficients in the balanced equation to determine the correct mole ratios before calculating the volumes.
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