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Question 22

From Chemistry HL Paper 1 (May 2024, TZ2)

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  1. The graphs below show a plot of ln k against 1/T for reactions X and Y.
A graph showing ln k versus 1/T for two reactions, X and Y. Both lines have negative slopes, with line X being above line Y.
A graph showing ln k versus 1/T for two reactions, X and Y. Both lines have negative slopes, with line X being above line Y.

Considering the Arrhenius equation ln k = ln A − Ea/RT, which combination is correct for reactions X and Y?

A table presenting four combinations of relationships between the activation energy (Ea) and pre-exponential factor (A) for reactions X and Y.
A table presenting four combinations of relationships between the activation energy (Ea) and pre-exponential factor (A) for reactions X and Y.

Y, Value of A: X > Y" />
Y, Value of A: Y > X" />
X, Value of A: X > Y" />
X, Value of A: Y > X" />