IB Chemistry HL 2.2.9 Rate equations Question Bank

Practise IB Chemistry HL 2.2.9 by applying rate equations 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]

Organic compounds have many industrial applications.

(a)

1-Bromobutane reacts with aqueous sodium hydroxide, NaOH(aq), to form butan-1-ol.

[ 2 ]

(i)

Deduce the rate equation for this reaction.

[ 1 ]

$\text { «rate }=» k\left[\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{Br}\right]\left[\mathrm{OH}^{-}\right] \vee$

«rate => $k\left[\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{Br}\right]$ if $S_{N} 1$ named in (d)(l).

Marking guidance:

Accept NaOH for $\mathrm{OH}^{-}$

(ii)

Predict, giving a reason, the quantitative effect of doubling the concentration of NaOH(aq) on the reaction rate. Assume that all other conditions remain unchanged.

[ 1 ]

All question bank results loaded

2.2.9 (HL)—Rate equations question 1

Question (a)

Question (i)

Question (ii)