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 time
- B. 2 c³/s
- C. 3 c³/s
- D. 1.5 c³/s
Answer
The correct option is 2 cm3/s cm3/s - correct answer for time.
Explanation
The correct option is "2 cm3/s cm3/s - correct answer for time" because it supports the approved learning objective: Calculate rate from changes in mass or gas volume over time. 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
Confusing Rate Calculation
Students often confuse the calculation of rate by using the wrong quantity (e.g., using mass instead of gas volume or vice versa).
Ensure to identify whether you are measuring the change in mass or gas volume and use the appropriate quantity in your rate calculation.
Related flashcards
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