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Course: IAL Edexcel Linear (Chemistry)
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IAL Edexcel Linear (Chemistry)

Unit 1. Structure, Bonding and Introduction to Organic Chemistry

0/52 Dr Dabour Hub Science Diagram and Course Material

Unit 2. Energetics, Group Chemistry, Halogenoalkanes and Alcohols

0/68 Dr Dabour Hub Science Diagram and Course Material

Unit 3. Practical Skills in Chemistry I

0/13 Dr Dabour Hub Science Diagram and Course Material

Unit 4. Rates, Equilibria and Further Organic Chemistry

0/71 Dr Dabour Hub Science Diagram and Course Material

Unit 5. Transition Metals and Organic Nitrogen Chemistry

0/57 Dr Dabour Hub Science Diagram and Course Material

Unit 6. Practical Skills in Chemistry II

0/17 Dr Dabour Hub Science Diagram and Course Material
Quiz

6.1 Advanced Physical Chemistry Core Practicals – Check yourself

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Advanced Physical Chemistry Core Practicals IAL Modular Chemistry check yourself quiz: free practice for IAL Edexcel Modular (chemistry). Work through this Advanced Physical Chemistry Core Practicals IAL Modular Chemistry check yourself quiz and get instant feedback on every answer. If you get stuck, review the 6.1 Advanced Physical Chemistry Core Practicals — Notes — IAL Chemistry Notes lesson. More practice: IAL Edexcel Modular (chemistry) — all units. Syllabus: Pearson Edexcel International A Levels.

  • Questions count: 10
  • Passing grade: B+
  • Time limit: 10 minutes
Start Quiz
1.
Why is a sample from propanone iodination added to NaHCO3?
To neutralise the acid catalyst and stop the reaction
To act as indicator
To react with iodine
To speed up the reaction
2.
In a clock reaction the initial rate is proportional to:
t
t2
1/t
ln t
3.
At half-neutralisation of a weak acid:
pH = 7
pH = pKa
[H+] = [HA]
pH = 14 − pKa
4.
Why is a high-resistance voltmeter used for cell emf?
It is cheaper
It increases the current
It speeds up the reaction
So negligible current flows and the maximum emf is measured
5.
Why is starch added only near the end point in iodine/thiosulfate titrations?
It decomposes in thiosulfate
A high iodine concentration forms an insoluble complex with starch
It changes the pH
It reacts with thiosulfate
6.
Gradient of ln k vs 1/T equals:
Ea/R
−R/Ea
−Ea/R
ln A
7.
Which statement best describes Clock reaction?
A titration using an oxidising agent such as KMnO4 or a reducing agent such as sodium thiosulfate to find an amount of substance.
A reaction where a sudden visible change occurs after a set amount of product forms; 1/t is proportional to the initial rate.
The reference half-cell (Pt, H2 at 100 kPa, 1.00 mol dm-3 H+, 298 K) assigned E° = 0.00 V.
The point at which half of a weak acid has been neutralised, where [HA] = [A-] and pH = pKa.
8.
Which statement best describes Quenching?
A reaction where a sudden visible change occurs after a set amount of product forms; 1/t is proportional to the initial rate.
Stopping a reaction in a withdrawn sample, e.g. by adding it to sodium hydrogencarbonate or by cooling, so its composition can be titrated.
The reference half-cell (Pt, H2 at 100 kPa, 1.00 mol dm-3 H+, 298 K) assigned E° = 0.00 V.
The rate at the very start of a reaction, found from the gradient of a tangent at t = 0 or from a clock reaction.
9.
Which statement best describes Salt bridge?
Stopping a reaction in a withdrawn sample, e.g. by adding it to sodium hydrogencarbonate or by cooling, so its composition can be titrated.
The point at which half of a weak acid has been neutralised, where [HA] = [A-] and pH = pKa.
The rate at the very start of a reaction, found from the gradient of a tangent at t = 0 or from a clock reaction.
A strip soaked in saturated KNO3 that completes the circuit by allowing ions to move between half-cells.
10.
Which statement best describes Initial rate?
A titration using an oxidising agent such as KMnO4 or a reducing agent such as sodium thiosulfate to find an amount of substance.
k = Ae−Ea/RT, linking rate constant to activation energy and temperature.
The reference half-cell (Pt, H2 at 100 kPa, 1.00 mol dm-3 H+, 298 K) assigned E° = 0.00 V.
The rate at the very start of a reaction, found from the gradient of a tangent at t = 0 or from a clock reaction.
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Part of Unit 6. Practical Skills in Chemistry II — see every lesson and quiz in this unit.
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