Question detail
Explain how a product-volume graph can be used to compare two reaction rates.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Rate of reaction
Question
Explain how a product-volume graph can be used to compare two reaction rates.
Answer
Compare the gradients over the same time interval. The steeper product-volume graph has the larger rate because more product is formed per second.
Explanation
This answer is correct because it shows the formula, substitutes the measured product formed value, divides by time, and includes the correct rate unit. It stays within the Calculate mean rate of reaction using quantity of product formed divided by time taken. (MS 1a) learning objective for AQA Chemistry 8462.
Common mistake
Confusing Rate Calculation
Students often confuse the formula for calculating the mean rate of reaction by using the quantity of reactant instead of the quantity of product formed.
Always ensure to use the quantity of product formed divided by the time taken when calculating the mean rate of reaction.
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