Manganate Study guides, Revision notes & Summaries
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OCR A Level Chemistry A (H432) Chemistry B (H433) PAG 6: Synthesis of an organic solid Practice Exam Questions and Mark Scheme
- Exam (elaborations) • 26 pages • 2024
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This resource includes exam questions from both Chemistry A and Chemistry B. It is not designed as a topic test but is instead intended as a document to support the teaching and learning of Module 1 – Development of practical skills in chemistry. 
 
 
1.	A solid organic compound can be purified by recrystallisation. 
 
Which statement(s) about recrystallisation is/are true? 
 
1	The organic compound is more soluble in hot solvent. 
2	The hot solution is cooled before the purified organic compo...
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OCR A Level Chemistry A (H432) Chemistry B (H433) PAG 6: Synthesis of an organic solid Practice Exam Questions and Mark Scheme
- Exam (elaborations) • 26 pages • 2024
-
- £13.12
- + learn more
This resource includes exam questions from both Chemistry A and Chemistry B. It is not designed as a topic test but is instead intended as a document to support the teaching and learning of Module 1 – Development of practical skills in chemistry. 
 
 
1.	A solid organic compound can be purified by recrystallisation. 
 
Which statement(s) about recrystallisation is/are true? 
 
1	The organic compound is more soluble in hot solvent. 
2	The hot solution is cooled before the purified organic compo...
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AqA EXAMPRO A-LEVEL CHEMISTRY PRACTICE PAPER 2 MARK SCHEME SUMMER 2022 100% CORRECT.
- Exam (elaborations) • 10 pages • 2022
- Available in package deal
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Q1. (a) (i)M1 (Compounds / molecules with) the same structural formula2 
Penalise M1 if ‘same structure’ or ‘different structural / displayed formula’. 
M2 with atoms / bonds / groups arranged differently in space 
OR atoms / bonds / groups with different spatial arrangements / different orientation 
Ignore references to ‘same molecular formula’ or ‘same empirical formula’. 
Mark independently. 
(b)M1 Br2 OR bromine (water) OR bromine (in CCl4 / organic solvent)1 
If M1, has no r...
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OCR A Level Chemistry A (H432) Chemistry B (H433) PAG 6: Synthesis of an organic solid Practice Exam Questions and Mark Scheme
- Other • 26 pages • 2022
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- £10.65
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This resource includes exam questions from both Chemistry A and Chemistry B. It is not designed as a topic test but is instead intended as a document to support the teaching and learning of Module 1 – Development of practical skills in chemistry. 
 
 
1.	A solid organic compound can be purified by recrystallisation. 
 
Which statement(s) about recrystallisation is/are true? 
 
1	The organic compound is more soluble in hot solvent. 
2	The hot solution is cooled before the purified organic compo...
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2024 AQA A-level CHEMISTRY 74053 Paper 3 Question Paper & Mark scheme (Merged) MAY 2024 [VERIFIED]
- Exam (elaborations) • 54 pages • 2024
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- £6.56
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This question is about ethanedioic acid (HOOCCOOH) and the ethanedioate ion (−OOCCOO−). 
 
.	Ethanedioic acid reacts with propane-1,3-diol (HOCH2CH2CH2OH) to form a polyester. 
 
Draw the repeating unit of this polyester. 
[2 marks] 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
.	Explain why polyesters are biodegradable but polyalkenes are not biodegradable. 
[2 marks] 
 
 
 
 
 
 
 
 
 
 
 
 
 
.	Sodium ethanedioate is used to find the concentration of solutions of potassium manganate(VII) by titration. ...
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2024 Latest Update AQA A-level CHEMISTRY Version: 1.0 Final 7405/3 Paper 3 Question Paper + Mark scheme (Merged) Expert Verified
- Exam (elaborations) • 56 pages • 2024
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0	1	This question is about ethanedioic acid (HOOCCOOH) and the 
ethanedioate ion (−OOCCOO−). 
 
0	1	. 1	Ethanedioic acid reacts with propane-1,3-diol (HOCH2CH2CH2OH) to form a polyester. 
 
Draw the repeating unit of this polyester. 
[2 marks] 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
0	1	. 2	Explain why polyesters are biodegradable but polyalkenes are not biodegradable. 
[2 marks] 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
0	1	 
. 3	 
Sodium ethanedioate is used to find the concentration of solutions of potassium ...
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AQA AS LEVEL CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry Question Paper and Mark scheme {MERGED} June 2022
- Exam (elaborations) • 88 pages • 2024
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- £17.64
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Answer all questions in this section. 
 
 
box 
 
 
 
This question is about rates of reaction. 
 
Potassium manganate(VII), KMnO4, reacts with sodium ethanedioate, Na2C2O4, in the presence of dilute sulfuric acid. 
 
2 MnO –(aq) + 16 H+(aq) + 5 C O 2–(aq) 2 Mn2+(aq) + 8 H O(l) + 10 CO (g) 
 
The reaction mixture is purple at the start and goes colourless when all the MnO –(aq) ions have reacted. 
 
The rate of reaction can be measured as 1000 where t = the time taken for the mixture...
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AQA A-LEVEL CHEMISTRY PAPER 1 INORGANIC AND PHYSICAL CHEMISTRY
- Exam (elaborations) • 32 pages • 2022
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AQA A-LEVEL CHEMISTRY PAPER 1 INORGANIC AND PHYSICAL CHEMISTRY 
 
 
 
 
 
 
 
 
A-level 
CHEMISTRY 
Paper 1 Inorganic and Physical Chemistry 
 
Tuesday 13 June 2017	Afternoon	Time allowed: 2 hours 
Materials 
For this paper you must have: 
•	the Periodic Table/Data Booklet, provided as an insert (enclosed) 
•	a ruler with millimetre measurements 
•	a calculator, which you are expected to use where appropriate. 
 
Instructions 
•	Use black ink or black ball-point pen. 
•	Fill in the ...
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Chemistry Edexcel 9-1 Paper 1 & 2 revision quiz | Quick Revision | Tips and Tricks | PAGES 48
- Exam (elaborations) • 48 pages • 2021
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Compiled by a Year 11 chemistry student who received a Grade 8 in her recent IGCSE exams, this is a question and answer PDF where basic questions and more harder ones are discussed. 
 
Topics: 
-Moles 
-Balancing Equations 
-Covalent Substances 
-Covalent Bonding 
-Ionic Compounds 
-Ionic Bonding 
-Bonding 
-Masses in Reaction 
-Percentage Yield Formula 
-Water of Crystallisation 
-Finding Formulae using Experiments 
-Mass Numbers 
-Potassium Manganate (VII) Experiment 
-Moles and ...
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Benzene,methyl benzene and aryl halides Summary Cambridge International AS and A Level Chemistry Coursebook with CD-ROM, ISBN: 9781107638457 chemistry
- Summary • 26 pages • 2022
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Complete guide on benzene,methyl benzene and aryl halides. Properties and description of benzene rings. Structure of benzene derivatives and their naming. Combustion of benzene,free radical substitution and electrophilic substitution with conditions and mechanisms. Alkylation and acylation mechanism, conditions and products with diagrams. Side chain reactions with mechanisms(free radical substitution,oxidation with potassium manganate,halogenation, nitration and bromination). Aryl halides and it...
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