The rate of reaction is doubled for every 10oC rise in temperature. The increase in reaction rate as a result of temperature rise from 10o C to 100o C is:
Correct answer: C. 512
- A. 112
- B. 400
- C. 512
- D. 614
Explanation
The rate of reaction is doubled for every 10°C rise in temperature. So, if the initial rate of reaction is r, then the rate of reaction at 10°C is 2r, the rate of reaction at 20°C is 4r, and so on.If the initial temperature is 10°C and the final temperature is 100°C, then there is a rise in temperature of 100°C - 10°C = 90°C. This means that the rate of reaction will be 2^9 = 512.
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Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.
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