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Rate of Reaction Proportionality to Concentration Quiz

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Rate of Reaction Proportionality to Concentration Quiz

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Questions and Answers

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?

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?

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?

Activation energy determines the rate of a reaction Signup and view all the answers

For a first-order reaction, how is the half-life affected by changes in temperature?

Half-life increases as temperature increases Signup and view all the answers

What happens to the rate constant of a reaction if the temperature is increased by 10 degrees Celsius?

The rate constant doubles Signup and view all the answers

Which type of reaction would have a linear relationship between ln k and 1/T?

First-order reaction Signup and view all the answers

What does a negative value of the slope (m) represent in a graph of ln k against 1/T?

Decrease in the activation energy Signup and view all the answers

What will be the effect on the rate constant when Ea is increased?

rate constant decreases exponentially Signup and view all the answers

What will be the effect on rate if concentration is doubled in zero order kinetics?

Remains constant Signup and view all the answers