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A level chemistry A2 Assignment Rates of reaction Question and Answer £7.46   Add to cart

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A level chemistry A2 Assignment Rates of reaction Question and Answer

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This is an a level chemistry rates of reaction assignment with questions and answers

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  • July 6, 2024
  • 11
  • 2023/2024
  • Exam (elaborations)
  • Questions & answers
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anmreenrashad
Q1.
Solutions of two compounds, W and X, react together in the presence of a soluble catalyst, Y,
as shown in the equation

2W + X → Z

When the concentrations of W, X and Y are all doubled, the rate of reaction increases by a
factor of four.

Which is a possible rate equation for this reaction?

A rate = k [W]2 [X]

B rate = k [W]2 [Y]

C rate = k [X] [Y]

D rate = k [X] [Z]

(Total 1 mark)


Q2.
A rate investigation was carried out on a reaction involving three reactants, X, Y and Z.
The concentrations of the reactants were varied and the relative rate for each mixture
determined.

Experiment [X]/mol dm−3 [Y]/mol dm−3 [Z]/mol dm−3 Relative rate

1 1 × 10−3 1 × 10−3 2 × 10−3 1

2 2 × 10−3 2 × 10−3 2 × 10−3 4

3 5 × 10−4 2 × 10−3 4 × 10−3 0.5

The reaction is zero order with respect to Y.

What is the overall order of reaction?

A 0

B 1

C 2

D 3
(Total 1 mark)

, Q3.
A series of experiments was carried out to find the order of reaction with respect to reactant X.
In these experiments, only the concentration of X was changed.

Which graph would show that the reaction is second-order with respect to X?




A

B

C

D

(Total 1 mark)


Q4.
The rate equation for the hydrogenation of ethene

C2H4(g) + H2(g) C2H6(g)

is Rate = k[C2H4][H2]

At a fixed temperature, the reaction mixture is compressed to triple the original pressure.

What is the factor by which the rate of reaction changes?

A 6

B 9

C 12

D 27
(Total 1 mark)




Q5.

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