The most likely sudden change made to the system at the two-minute mark would be that
A - VCE - SSCE Chemistry - Question 14 - 2016 - Paper 1
Question 14
The most likely sudden change made to the system at the two-minute mark would be that
A. a catalyst was injected into the flask.
B. the volume of the flask was incre... show full transcript
Worked Solution & Example Answer:The most likely sudden change made to the system at the two-minute mark would be that
A - VCE - SSCE Chemistry - Question 14 - 2016 - Paper 1
Step 1
A. a catalyst was injected into the flask.
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Answer
Injecting a catalyst into the flask would quickly increase the reaction rate, making it a sudden and likely change at the two-minute mark. Catalysts lower the activation energy needed for a reaction, thereby speeding it up without being consumed in the process.
Step 2
B. the volume of the flask was increased.
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Answer
Increasing the volume of the flask may lead to a change, but it is typically a gradual process that does not correlate with a sudden change. This would not be the most likely option.
Step 3
C. an inert gas was injected into the flask.
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Answer
Injecting an inert gas would likely not cause a sudden change in the system's dynamics or reaction rates, as inert gases do not engage in chemical reactions.
Step 4
D. some of the gas mixture was removed from the flask.
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Answer
Removing gas mixture would also alter the system, but similar to option B, this would usually not constitute a sudden change.
