SCS YR 13 - The ARRHENIUS equation

why does a higher temperature increase the rate of a reaction

• it only increase the frequency of particle collisions

• it reduce the activation energy if the reaction

• it increase both the frequency and energy of particle collisions

• it only increase the energy of particle collisions

Rate = k[A]^m[B]ⁿ

This equation is the;

• Arrhenius equation

• Le Chateliers principle

• Rate equation

• Born Haber cycle

k = Ae^-Ea/RT

This equation is the;

• Arrhenius equation

• Le Chateliers principle

• Rate equation

• Born Haber cycle

In the Arrhenius equation;

"A" is the

• exponential factor

• rate constant

• frequency factor

• gas constant

The units of temperature in the Arrhenius equation are;

• Celsius

• Kelvin

• degrees Celsius

• Fahrenheit

The units of the Activation energy in the Arrhenius equation are;

• kilo Joules

• Joules

• kilo Joules per mole

• Joules per mole

The units of "k" in the Arrhenius equation are always the same as the;

• Frequency factor "A"

• Activation energy "Ea"

• Gas constant "R"

• Temperature "T"

Choose the correct equation linked to the Arrhenius equation

• lnk = A - Ea/RT

• lnk = lnA + Ea/RT

• lnk = lnA - Ea/RT

• k = lnA - Ea/RT

Select the correct equation when Ea is the subject

• Ea = RT(lnk/A)

• Ea = (lnA/k)/RT

• Ea = R(lnA/k)/T

• Ea = RT(lnA/k)

When using graphs of (lnk) against (1/T), the gradient of the slope is equal to the;

• Ea/R

• -Ea/R

• -Ea/T

• R/-Ea