Question detail
A 0.500 g sample of a solid reacts in 5.00 s. What is the mean rate of reactant consumption in g s⁻¹?
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. 0.100 gs⁻¹
- B. 0.050 gs⁻¹
- C. 0.025 gs⁻¹
- D. 0.010 gs⁻¹
Answer
0.100 gs⁻¹
Explanation
The correct answer is 0.100 gs⁻¹. This answer directly addresses the question: A 0.500 g sample of a solid reacts in 5.00 s. What is the mean rate of reactant consumption in g s⁻¹? It matches the approved Chemistry 8462 learning objective and the linked subtopic. The other options are incorrect because they either change the rate, catalyst, reversible reaction, equilibrium, or graph context, or they do not answer the exact point being tested.
Common mistake
Misunderstanding Concentration Effects
Students often think that increasing concentration has no effect on reaction rate.
To fix this, remember that increasing concentration usually increases the number of particles in a given volume, leading to more frequent collisions and a faster reaction rate.
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