4 original questions from New Regents. The worksheet, answer key, and browser practice are free.
Reading a Reaction After Warm-Up 4 questions
Reading a Reaction After Warm-Up
Base your answers on the information provided and your knowledge of chemistry. Use the 2025 Chemistry Reference Tables as needed.
A display runs the same gas-forming model reaction twice. Both runs use the same starting amounts and mixing method. P starts at 35 °C and remains there. Q starts at 20 °C and warms to 35 °C at 20 s. Q then stays at 35 °C. Neither run exhausts a reactant during the graph.
Question 1
In which listed interval do both trials first form the same amount of new product?
- 0 to 10 s
- 10 to 20 s
- 20 to 30 s
- The amounts differ in all three intervals.
Question 2
Calculate the average rate of product formation in each trial from 0 to 20 s.
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Question 3
A student looks at the product amounts at 40 s and says Q is still forming product more slowly from 30 to 40 s. Use the graph to evaluate the claim.
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The class now wants to separate the effect of starting temperature from any difference in how the two runs were measured.
Question 4
Describe a repeat that checks whether the early rate gap disappears when both reactions begin at 35 °C. State what to measure.
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