IB Chemistry HL 2.2.13 Arrhenius factor (A) Question Bank

Practise IB Chemistry HL 2.2.13 by applying arrhenius factor (a) to exam-style questions.

Exam points

identify the relevant chemical structure, process or evidence
apply the correct chemical model or equation
evaluate the result using chemical reasoning and data

[Maximum number: 2]

The reaction between carbon monoxide, CO(g), and nitrogen dioxide, $\mathrm{NO}_{2}(\mathrm{~g})$ , was studied at different temperatures and a graph was plotted of $\ln k$ against $\frac{1}{T}$ . The equation of the line of best fit was found to be:

\ln k=-1.60 \times 10^{4}\left(\frac{1}{T}\right)+23.2

Figure for Question 2.2.13 (HL)—Arrhenius factor (A) question 1 — IB Chemistry HL

Calculate the numerical value of A.

$\ln \mathrm{A}=($ intercept on y-axis =) 23.2;
$\mathrm{A}=1.190 \times 10^{10} ;$

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2.2.13 (HL)—Arrhenius factor (A) question 1