9701 · topic questions

Simple rate equations, orders of reaction and rate constants

Chemistry4 questions

4 past-paper questions on Simple rate equations, orders of reaction and rate constants

9701/41 · May/June 20242 marks
The compound nitrosyl bromide, NOBr, can be formed as shown in reaction 3. reaction 3 2NO(g) + Br2(g) → 2NOBr(g) The rate is…
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9701/41 · October/November 20242 marks
Complete the three possible rate equations that are consistent with these data. rate rate = rate =
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9701/41 · October/November 20242 marks
Choose one of the rate equations you have written in (i), and calculate the value of the rate constant, k. Include the units of…
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9701/41 · May/June 20252 marks
In experiment 1, the initial concentrations of NO and Cl2 are equal. The initial rate of the reaction in experiment 1 is 2.57 ×…
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Worked example

What a lost mark actually looks like

This answer reaches the right coordinates and still drops a mark — the conclusion is stated, but never justified. Examiners pay for the reasoning, not the answer.

MARKED

80%

Strong

M1dy/dx = 3x^2 - 12x + 9M1 earned
M1(x - 1) $(x - 3) = 0$ M1 earned
A1 $x = 1$ or $x = 3$ A1 earned
B1(1, 5) is a maximum and (3, 1) is a minimumB1 not earned

B1 — withheld
You stated the nature of each point correctly, but stated it without justification. This mark needs the reasoning shown — either evaluate the second derivative (d²y/dx² = 6x − 12, giving −6 at $x = 1$ and +6 at $x = 3$ ) or show a sign change of dy/dx either side of each point. An unsupported assertion earns nothing here even when the conclusion is right.

Simple rate equations, orders of reaction and rate constants (9701) past-paper questions — marked instantly

These are real Cambridge Chemistry past-paper questions on Simple rate equations, orders of reaction and rate constants. Open one, attempt it, then upload your working — MarkScheme grades it against the official 9701 mark scheme so you see exactly where the marks are won and lost on this topic.

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Frequently asked questions

How many Simple rate equations, orders of reaction and rate constants questions are there for 9701?: This page collects 4 recent Cambridge Chemistry (9701) past-paper questions tagged to Simple rate equations, orders of reaction and rate constants. Each links straight to instant marking against the official 9701 scheme.
How are Simple rate equations, orders of reaction and rate constants answers marked?: Type or photograph your working and MarkScheme scores it against the real 9701 mark scheme for this topic — method, accuracy and any band descriptors — so you see exactly where the marks are.
Where can I learn Simple rate equations, orders of reaction and rate constants first?: Start with the free Chemistry lesson on Simple rate equations, orders of reaction and rate constants, then come back and drill past-paper questions under timed conditions.