Arrhenius equation and temperature dependence of k

Describe qualitatively how the rate constant rises with temperature, and analyse the Arrhenius equation k = A exp(-Ea/RT) in its linear form ln k = -Ea/RT + ln A, reading the meaning of the gradient and intercept of a plot of ln k against 1/T.

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Zadanie 3bPaper 2, maj 2025, TZ2
wzorowane12 pktotwarteśrednie (szac.)

In moist air carbonyl dibromide is slowly hydrolyzed: BrX2CO(g)+HX2O(g)COX2(g)+2HBr(g)\ce{Br2CO(g) + H2O(g) -> CO2(g) + 2HBr(g)} (i) Suggest a method of monitoring the progress of this reaction at constant temperature so that its rate can be determined. (ii) Outline two reasons why a…

Zadanie 3dPaper 2, listopad 2025, TZ3
wzorowane5 pktobliczeniowetrudne (szac.)

The forward reaction is first order with respect to cyclohexane. CX6HX12(g)CX6HX6(g)+3HX2(g)\ce{C6H12(g) <=> C6H6(g) + 3H2(g)} (i) Sketch a graph showing how the rate varies with the concentration of cyclohexane. (ii) Deduce the reaction's rate equation, and state the units of the…

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