Question detail
What is a common practical method for investigating the rate of reaction between sodium thiosulfate and hydrochloric acid?
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. Measuringthe change in mass
- B. Timinghow longit takes for a cross to disappear
- C. Recordingtemperature changes
- D. Observingcolor changes
Answer
Timinghow longit takes for a cross to disappear
Explanation
The correct answer is Timinghow longit takes for a cross to disappear. This answer directly addresses the question: What is a common practical method for investigating the rate of reaction between sodium thiosulfate and hydrochloric acid? 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 Investigation Methods
Students often describe methods for investigating reaction rates without specifying how to control variables.
Emphasize the importance of controlling variables such as temperature, concentration, and surface area to ensure valid results.
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