Titres Study guides, Class notes & Summaries
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OCR AS LEVEL CHEMISTRY A H032/02 JUNE 2022 FINAL MARK SCHEME - Depth in chemistry.
- Exam (elaborations) • 27 pages • 2023
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OCR AS LEVEL CHEMISTRY A H032/02 JUNE 2022 FINAL MARK SCHEME - Depth in chemistry. 
H032/02 Mark Scheme 
6 
11. Annotations available in RM Assessor 
Annotation Meaning 
Correct response 
Incorrect response 
Omission mark 
Benefit of doubt given 
Contradiction 
Rounding error 
Error in number of significant figures 
Error carried forward 
Level 1 
Level 2 
Level 3 
Benefit of doubt not given 
Noted but no credit given 
Ignore 
Blank page 
H032/02 Mark Scheme 
7 
12. Abbreviations, annotations a...
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OCR AS LEVEL CHEMISTRY A H032/02 JUNE 2022 FINAL MARK SCHEME - Depth in chemistry.
- Exam (elaborations) • 27 pages • 2023
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OCR AS LEVEL CHEMISTRY A H032/02 JUNE 2022 FINAL MARK SCHEME - Depth in chemistry. 
H032/02 Mark Scheme 
9 
Question Answer Marks AO 
element 
1 (a) (i) (Acid) releases H+ 
ions/ H+ donor 
 
1 AO1.1 AL(ii) (weak acid) partially dissociates/ionises 1 AO1.1 IGa n• 
IGIG(b) (i) 
Titration 
1 
Titration 
2 
Titration 
3 
Final reading/ 
cm3 27.35 27.65 27.85 
Initial 
reading/cm3 0.05 0.10 0.45 
Titre/cm3 27.30 27.55 27.40 
Initial and final readings 
All titration readings (× 6) correct...
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AQA A Level Chemistry Paper 1 2022 SOLUTION 100% REVISED 2023//2024
- Exam (elaborations) • 9 pages • 2023
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Bronsted-Lowry acid - ANSWER a proton donor. 
Bronsted-Lowry base - ANSWER proton acceptor 
What is H3O+? - ANSWER hydronium ion 
definition of pH - ANSWER -log10[H+] 
How do you get [H+] from ph? - ANSWER 10^(-pH) 
the ionic product of water - ANSWER [OH-][H+] 
Is dissociation an endo or exothermic reaction? - ANSWER endothermic 
Why is the concentration of water not included in Kw? - ANSWER The concentration of 
water is so large and constant the equilibrium equation can be simplified 
How do...
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AQA A Level Chemistry Paper 1 2022 SOLUTION 100% REVISED 2023//2024
- Exam (elaborations) • 9 pages • 2023
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AQA A Level Chemistry 
Paper 1 2022 
SOLUTION 100% 
REVISED 2023//2024 
Bronsted-Lowry acid - ANSWER a proton donor. 
Bronsted-Lowry base - ANSWER proton acceptor 
What is H3O+? - ANSWER hydronium ion 
definition of pH - ANSWER -log10[H+] 
How do you get [H+] from ph? - ANSWER 10^(-pH) 
the ionic product of water - ANSWER [OH-][H+] 
Is dissociation an endo or exothermic reaction? - ANSWER endothermic 
Why is the concentration of water not included in Kw? - ANSWER The concentration of 
water i...
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NURO 671 TEST 1 - MODULE 10 (PERINATAL INFECTION) |145 QUESTIONS AND ANSWERS
- Exam (elaborations) • 27 pages • 2023
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diseases with mother to child transmission 
HIV 
hepatitis 
HSV 
 
 
 
diseases with congenital versions of syndromes 
syphilis 
rubella 
 
 
 
what is fetal hydrops? 
fluid accumulation in 2+ compartments 
 
- pleural effusion 
- ascites 
- pericardial effusion 
 
 
 
what are long-term fetal physical/mental outcomes of pregnancy infections? 
- blindness/deafness 
- neuro and learning deficits 
- congenital anomalies 
 
 
 
what diseases do you screen teachers and daycare workers for? 
 
 
 
wh...
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AS Depth chemistry paper H032/02
- Exam (elaborations) • 3 pages • 2023
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AS Depth chemistry paper H032/02 
the student is not confident that their titre is accurate 
suggest what the student should do next to reduce the effect of any random error in the titration - ANS-repeat titration until two titrations are concordant (0.01cm3 within) 
calculate mean titre from concordant titres
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AQA A Level Chemistry Paper 1 2022 SOLUTION 100% REVISED 2023//2024
- Exam (elaborations) • 9 pages • 2024
- Available in package deal
-
- $11.99
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AQA A Level Chemistry 
Paper 1 2022 
SOLUTION 100% 
REVISED 2023//2024 
Bronsted-Lowry acid - ANSWER a proton donor. 
Bronsted-Lowry base - ANSWER proton acceptor 
What is H3O+? - ANSWER hydronium ion 
definition of pH - ANSWER -log10[H+] 
How do you get [H+] from ph? - ANSWER 10^(-pH) 
the ionic product of water - ANSWER [OH-][H+] 
Is dissociation an endo or exothermic reaction? - ANSWER endothermic 
Why is the concentration of water not included in Kw? - ANSWER The concentration of 
water i...
-
AS chemistry paper H032/02 Practice Questions And Answers
- Exam (elaborations) • 3 pages • 2023
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AS chemistry paper H032/02 Practice 
Questions And Answers 
Name the apparatus that the student should use to: 
- Make up the acid solution to 250.0cm3 
-measure the 25.0cm3 portion of acid solution - CORRECT ANSWER-volumetric flask 
graduated pipette 
the student is not confident that their titre is accurate 
suggest what the student should do next to reduce the effect of any random error in the 
titration - CORRECT ANSWER-repeat titration until two titrations are concordant 
(0.01cm3 within...
-
AS chemistry paper H032/02 Practice Questions And Answers
- Exam (elaborations) • 3 pages • 2023
-
- $7.99
- + learn more
AS chemistry paper H032/02 Practice 
Questions And Answers 
Name the apparatus that the student should use to: 
- Make up the acid solution to 250.0cm3 
-measure the 25.0cm3 portion of acid solution - CORRECT ANSWER-volumetric flask 
graduated pipette 
the student is not confident that their titre is accurate 
suggest what the student should do next to reduce the effect of any random error in the 
titration - CORRECT ANSWER-repeat titration until two titrations are concordant 
(0.01cm3 within...
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