Question detail
If 30 cm³ of gas is produced in 15 seconds, what is the mean rate of reaction in cm³/s?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Rate of reaction
Question
- A. 2 cm3/s cm3/s - correct answer for g/s
- B. 2 c³/s
- C. 3 c³/s
- D. 1 c³/s
Answer
The correct option is 2 cm3/s cm3/s - correct answer for g/s.
Explanation
The correct option is "2 cm3/s cm3/s - correct answer for g/s" because it supports the approved learning objective: Use units such as g/s, cm3/s or mol/s for rate of reaction calculations. The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for Calculating rates of reactions.
Common mistake
Incorrect Units for Rate of Reaction
Students often use incorrect units when calculating the rate of reaction, such as using grams instead of g.
Always ensure to express the rate of reaction in the correct units, such as g, c, or mol/s, depending on the context of the calculation.
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