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Questions and Answers
What is the rate constant for a first-order reaction with a half-life of 200 seconds?
What is the rate constant for a first-order reaction with a half-life of 200 seconds?
- 2.76 × 10^-4 s^-1
- 6.93 × 10^-4 s^-1
- 3.25 × 10^-3 s^-1
- 1.38 × 10^-3 s^-1 (correct)
In a zero-order reaction, how does the rate change with an increase in concentration?
In a zero-order reaction, how does the rate change with an increase in concentration?
- Rate increases linearly with concentration
- Rate is independent of concentration (correct)
- Rate increases exponentially with concentration
- Rate decreases with concentration
What happens to the rate of a first-order reaction when the concentration of the reactant is doubled?
What happens to the rate of a first-order reaction when the concentration of the reactant is doubled?
- The rate is doubled (correct)
- The rate quadruples
- The rate is halved
- The rate remains the same
Which statement is true about the activation energy in a chemical reaction?
Which statement is true about the activation energy in a chemical reaction?
For a first-order reaction, how is the half-life affected by changes in temperature?
For a first-order reaction, how is the half-life affected by changes in temperature?
What happens to the rate constant of a reaction if the temperature is increased by 10 degrees Celsius?
What happens to the rate constant of a reaction if the temperature is increased by 10 degrees Celsius?
Which type of reaction would have a linear relationship between ln k and 1/T?
Which type of reaction would have a linear relationship between ln k and 1/T?
What does a negative value of the slope (m) represent in a graph of ln k against 1/T?
What does a negative value of the slope (m) represent in a graph of ln k against 1/T?
What will be the effect on the rate constant when Ea is increased?
What will be the effect on the rate constant when Ea is increased?
What will be the effect on rate if concentration is doubled in zero order kinetics?
What will be the effect on rate if concentration is doubled in zero order kinetics?
