The rate expression have a negative sign for
Correct answer: A. Disappearance of reactants
- A. Disappearance of reactants
- B. Formation of products
- C. A given time
- D. All of these
Explanation
When you're looking at the rate of a reaction in terms of reactants, you typically express it as a decrease in the concentration of reactants over time. This decrease is represented with a negative sign in the rate expression because the concentration of reactants is diminishing.
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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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