Rate of reaction can be studied graphically by plotting time and:
Correct answer: B. Concentration
- A. Temperature
- B. Concentration
- C. Pressure
- D. Activation Energy
Explanation
If you plot a graph of [A] vs. t and draw a line tangent to the graph, then rate = ½ × |slope| of the line (rate is always a positive number). To find the instantaneous rate of reaction at a given time: Plot a graph of concentration of reactant against time of a reaction. The gradient of the tangent gives a rate of reaction.
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About Reaction Kinetics
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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