Excess reagent - Study guides, Study notes & Summaries
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AQA A-level CHEMISTRY 7405/2 Paper 2 Organic and Physical Chemistry Version: 1.0 Final *Jun237405201* IB/M/Jun23/E8 7405/2QUESTION PAPER & MARKING SCHEME/ [MERGED] Marl( scheme June 2023
- Exam (elaborations) • 66 pages • 2024
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AQA 
A-level 
CHEMISTRY 
7405/2 
Paper 2 Organic and Physical Chemistry 
Version: 1.0 Final 
*Jun* 
IB/M/Jun23/E8 7405/2 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
8 
9 
TOTAL 
Monday 19 June 2023 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 scientific calculator, which you are expected to use where appropriate. 
Instructions 
• Us...
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AQA A-level CHEMISTRY 7405/2 Paper 2 Organic and Physical Chemistry Version: 1.0 Final *Jun237405201* IB/M/Jun23/E8 7405/2// QUESTION PAPER & MARKING SCHEME/ [MERGED] Marl( scheme June 2023
- Exam (elaborations) • 66 pages • 2024 Popular
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- R163,63
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AQA 
A-level 
CHEMISTRY 
7405/2 
Paper 2 Organic and Physical Chemistry 
Version: 1.0 Final 
*Jun* 
IB/M/Jun23/E8 7405/2 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
8 
9 
TOTAL 
Monday 19 June 2023 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 scientific calculator, which you are expected to use where appropriate. 
Instructions 
• Us...
-
AQA AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry Question Paper + Mark scheme [MERGED] June 2022 *JUN227404201* IB/M/Jun22/E7 7404/2 For Examiner’s Use Question Mark 1
- Exam (elaborations) • 63 pages • 2023
- Available in package deal
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- R145,43
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AQA 
AS 
CHEMISTRY 
7404/2 
Paper 2 Organic and Physical Chemistry 
Question Paper + Mark scheme [MERGED] 
June 2022 
*JUN* 
IB/M/Jun22/E7 7404/2 
For Examiner’s Use 
Question Mark 
1 
2 
3 
4 
5 
6 
7 
Section B 
TOTAL 
Time allowed: 1 hour 30 minutes 
Materials 
For this paper you must have: 
• the Periodic Table/Data Sheet, provided as an insert (enclosed) 
• a ruler with millimetre measurements 
• a scientific calculator, which you are expected to use where appropriate. 
Instructions...
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AS	 CHEMISTRY Paper 2 Organic and Physical Chemistry Tuesday 23 May 2023	Morning
- Exam (elaborations) • 41 pages • 2023
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- R271,01
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Practicals Chemistry AQA A-level Rated A+
- Exam (elaborations) • 24 pages • 2023
- Available in package deal
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Practicals Chemistry AQA A-level Rated A+ 
Required Practical 1 - titration and making a standard solution 
Making a standard solution 1. weigh the required mass of solid using a sample bottle on a 2 dp balance. 
2. transfer the solid into a beaker using distilled water to wash it out- preventing any solid remaining in the sample bottle. 
3. reweigh the sample bottle and work out the difference. 
4. Add 100cm3 of distilled water to the beaker to dissolve the solid (small volume of water) using a...
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AQA AS CHEMISTRY Paper 2 Organic and Physical Chemistry for MAY 2023
- Exam (elaborations) • 41 pages • 2023
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- R267,37
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STRASINGER7th ed (CHAPTER 6-9: Chemical Exam Urine, Microscopic Exam Urine, Renal Disease, & Metabolic Disorder Screening) Questions and Answers 100% Verified
- Exam (elaborations) • 39 pages • 2024
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STRASINGER7th ed (CHAPTER 6-9: Chemical Exam Urine, 
Microscopic Exam Urine, Renal Disease, & Metabolic Disorder 
Screening) Questions and Answers 100% Verified 
A CORRECT ANSWER-1. Leaving excess urine on the reagent strip after removing it from 
the specimen will: 
A. Cause runover between reagent pads B. Alter the color of the specimen 
C. Cause reagents to leach from the pads D. Not affect the chemical reactions 
D CORRECT ANSWER-2. Failure to mix a specimen before inserting the reagent s...
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OCR 2023 Chemistry A H032/02: Depth in chemistry AS Level Question Paper & Mark Scheme (Merged)
- Exam (elaborations) • 7 pages • 2024
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OCR 2023 Chemistry A H032/02: Depth in chemistry 
AS Level Question Paper & Mark Scheme (Merged) 
(i) The uncertainty in each thermometer reading is ±0.5°C and the 
uncertainty in the measured volume of water is ±2cm3. 
Determine whether the temperature change or the measured 
volume of water has the greater percentage uncertainty - ANSpercentage uncertainty= (Absolute Uncertainty / Measured Value) 
x 100 
uncertainty of measure volume of water= 
2/200 x 100= 1 
uncertainty of temp ris...
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CHEM 162 Experiment 5: Spectrochemical Series Complete Solution 2023
- Exam (elaborations) • 5 pages • 2023
- Available in package deal
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CHEM 162 Experiment 5: Spectrochemical Series Complete Solution 2023. Part A: Preparation of cis-Bis(glycinato)copper(II) monohydrate, Cu(gly)2 
·H2O 
mass CuSO4 
·5H2O g 
mass NH2CH2CO2H (glycine) g 
molar mass CuSO4 
·5H2O g/mole 
moles CuSO4 
·5H2O moles 
molar mass NH2CH2CO2H (glycine) g/mole 
moles NH2CH2CO2H (glycine) moles 
limiting reagent is 
molar mass Cu(gly)2 
·H2O g/mole 
(Note for molar mass: each glycine loses the acidic proton in order to be a bidentate ligand) 
mass Cu(gly)...
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URINALYSIS: CHEMICAL AND MICROSCOPIC EXAMINATION MLS
- Exam (elaborations) • 9 pages • 2024
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41) Which of the following can give a false-negative urine protein reading? 
A) contamination 
B) heavy mucus 
C) presence of blood 
D) very dilute urine - Answer-D 
 
42) The pH of the urine specimen measures the: 
A) free sodium ions 
B) free hydrogen 
C) total acid excretion 
D) volatile acids - Answer-B 
 
45) The principle of the reagent strip test for urine protein depends on: 
A) an enzyme reaction 
B) protein errors of indicators 
C) copper reduction 
D) the toluidine - Answer-B 
 
47) R...
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