The decomposition of N 2 O 5 (g) is studied at 50 °C and at 75 °C. Which of the

ID: 709913 • Letter: T

Question

The decomposition of N2O5 (g) is studied at 50 °C and at 75 °C. Which of the following statements

concerning the studies is correct?

a. The rate at 75 °C will be larger because the activation energy is lower at 75 °C than at 50 °C.

b. The rate at 75 °C will be larger because the activation energy is higher at 75 °C than at 50 °C.

c. The rate at 75 °C will be smaller because the molecules are moving at higher speeds

d. The rate at 75 °C will be larger because the concentration of N2O5 gas is larger at 75 °C

e. The rate at 75 °C will be larger because the fraction of molecules with enough energy to react increases

with increasing temperature.

Answer is E - need explanation - thanks!

e. The rate at 75Ã‚ °C will be larger because the fraction of molecules with enough energy to react increases

higher the temperature higher the rate constant because lower the activation nergy for a reaction to occur

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