Proton nmr Study guides, Revision notes & Summaries
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OCR 2023 Chemistry A H432/02: Synthesis and analytical techniques A Level Question Paper & Mark Scheme (Merged)
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OCR 2023 
Chemistry A 
H432/02: Synthesis and analytical 
techniques A Level 
Question Paper & Mark Scheme 
(Merged) 
Please Review and leave your 
Rating stars…. 
Please write clearly in black ink. Do not write in the barcodes. 
Centre number Candidate number 
First name(s) 
Last name 
Oxford Cambridge and RSA 
Monday 19 June 2023 – Afternoon 
A Level Chemistry A 
H432/02 Synthesis and analytical techniques 
Time allowed: 2 hours 15 minutes 
INSTRUCTIONS 
• Use black ink. You can use a...
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OCR A-Level Chemistry Paper 2 2022 ALL ANSWERS 100% CORRECT GUARANTEED GRADE A+
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What is an alkene and its general formula? 
It is an unsaturated hydrocarbon with a least one C=C bond. General formula is CnH2n 
What is a sigma bond? σ 
single covalent bond formed when two s orbitals overlap. High electron density 
What is a pi bond? 
sideways overlap of p orbitals that occur in a double or triple bond. Much weaker than sigma, low bond enthalpy and lower electrostatic attraction 
Is an alkane or an alkene more reactive? 
Alkene. contains both sigma and pi bonds with high ele...
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Module 1- MRI Physics and Fundamentals Questions And Answers
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Module 1- MRI Physics and Fundamentals Questions And Answers 
MRI stands for... - Answer-magnetic resonance imaging 
NMR stands more... - Answer-nuclear magnetic resonance 
"nuclear" in NMR refers to... - Answer-the nucleus of the atom 
Basis of MRI principles is tracked back to the ____'s with _____ ________ - Answer-1700 / Jean Bastiste 
1st image utilized by MRI principles was created by _____ _________ in ____. - Answer-Paul Lauterbur 
/1973 
The 1st MRI images of a human were acquired b...
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OCR 2023 Chemistry A H432/02: Synthesis and analytical techniques A Level Question Paper & Mark Scheme (Merged)
- Exam (elaborations) • 67 pages • 2024
- Available in package deal
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- £4.44
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Oxford Cambridge and RSA 
Monday 19 June 2023 – Afternoon 
A Level Chemistry A 
H432/02 Synthesis and analytical techniques 
Time allowed: 2 hours 15 minutes 
INSTRUCTIONS 
• Use black ink. You can use an HB pencil, but only for graphs and diagrams. 
• Write your answer to each question in the space provided. If you need extra space use 
the lined pages at the end of this booklet. The question numbers must be clearly shown. 
• Answer all the questions. 
• Where appropriate, your answer...
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OCR 2023 Chemistry A H432/02: Synthesis and analytical techniques A Level Question Paper & Mark Scheme (Merged)
- Exam (elaborations) • 67 pages • 2024
-
- £6.06
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OCR 2023 
Chemistry A 
H432/02: Synthesis and analytical 
techniques A Level 
Question Paper & Mark Scheme 
(Merged) 
Please Review and leave your 
Rating stars…. 
Please write clearly in black ink. Do not write in the barcodes. 
Centre number Candidate number 
First name(s) 
Last name 
Oxford Cambridge and RSA 
Monday 19 June 2023 – Afternoon 
A Level Chemistry A 
H432/02 Synthesis and analytical techniques 
Time allowed: 2 hours 15 minutes 
INSTRUCTIONS 
• Use black ink. You can use a...
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exam 2 aromatics / rxn ALL SOLUTION LATEST EDITION 2024 LATEST UPDATE AID GRADE A+
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best to prepare m-choroaniline from benzene? 
HNO2/H2SO4; Cl2/AlCl3; SN/HCl; HO- 
best to prepare p-chlorotoluene in high yield? 
start with p-aminotoluene; NaNO2/HCl, 0C; CuCl 
best to prepare m-dibromobenzene from benzene? 
nitrate; brominate; Sn/HCl; NaNO2; 0 C; CuBr 
electrophilic aromatic substitution Nitro ? N Group, Nitrogen 
M-director, destabilized META, less than ortho, para 
electrophilic aromatic substitution -NHCOCH3 ? 
Activator, o-p director 
reaction with Bromine substituent ? Br...
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Chem 233 TOP Exam Questions and CORRECT Answers
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When placed inside of a magnetic field, NMR active nuclei act in what way?They align 
mostly in the same direction as the applied magnetic field 
When placed inside of a magnetic field, the magnetic field that electrons generate aligns in 
the opposite direction of the applied magnetic field. This has what effect on the nucleus the 
electrons are around?The electrons shield the nucleus from the magnetic field 
The nitrogen in the compound below has what kind of effect on nearby 
hydrogens?Di...
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ARMRIT Exam Questions & Answers Latest Updated
- Exam (elaborations) • 26 pages • 2023
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The area in Asia that first discovered magnets is known as? - Answer Magnesia 
 
The first magnets were called magnetites because the people that lived in the area where they were found were known as? - Answer Magnetes 
 
For centuries, sailors use magnets for which of the following purposes? - Answer To navigate the seas 
 
Which of the following people named the ends of the magnet north and south poles? - Answer Petrus peregtinus de Maricourt 
 
In 1825, the British scientist, William Surgeon,...
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A-level CHEMISTRY 7405
- Exam (elaborations) • 6 pages • 2023
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A-level 
CHEMISTRY 
7405 
 
Data Booklet 
This Data Booklet is provided with AQA A-level Chemistry question papers. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
IB/M/Insert to A-level Chemistry/E8	7405 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
3 
 
Data Sheet 
 
 
 
Table A 
Infrared absorption data 
 
 
Bond	Wavenumber 
 
Table B 
1H NMR chemical shift data 
 
 
Type of proton	/ppm 
 
Table C 
13C NMR chemical shi...
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QBM Final Exam Questions With 100% Correct Answers
- Exam (elaborations) • 26 pages • 2024
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QBM Final Exam Questions With 100% 
Correct Answers 
What is the definition of Molecular biology - answerStructure and function of 
macromolecules (proteins and nucleic acids) 
What is the central dogma of DNA? - answerDNA ⟶ RNA ⟶ Proteins 
What BSL corresponds to minimal hazards? - answerBSL-1 
What does BSL-1 correspond to? - answerminimal hazards 
What BSL corresponds to organisms with potential hazards? - answerBSL-2 
What BSL(s) require proper protective equipment? - answerBSL2-4 
Under...
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