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Pearson Edexcel International Advanced Level In Chemistry (WCH14) Paper 01 Rates, Equilibria and Further Organic Chemistry Mark Scheme (Results) June 2024$13.49
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Pearson Edexcel International Advanced Level In Chemistry (WCH14) Paper 01 Rates, Equilibria and Further Organic Chemistry Mark Scheme (Results) June 2024
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Pearson Edexcel International Advanced
Institution
Pearson Edexcel International Advanced
Pearson Edexcel International Advanced Level In Chemistry (WCH14) Paper 01 Rates, Equilibria and
Further Organic Chemistry Mark Scheme (Results) June 2024
Pearson Edexcel International Advanced Level In Chemistry (WCH14) Paper 01 Rates, Equilibria and
Further Organic Chemistry Mark Scheme (Results) June 2024
Mark Scheme (Results)
June 2024
Pearson Edexcel International Advanced Level
In Chemistry (WCH14) Paper 01
Rates, Equilibria and Further Organic Chemistry
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Where some judgement is required, mark schemes will provide
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Crossed out work should be marked UNLESS the candidate has
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, Section A
Question
Answer Mark
Number
1(a) The only correct answer is A (colorimetry) 1
B is not correct because there is no change in mass
C is not correct because titration is not a continuous monitoring method
D is not correct because no gas is produced
Question
Answer Mark
Number
1(b) The only correct answer is D (dm9 mol3 s1) 1
A is not correct because these are the units of rate
B is not correct because these are the units of the rate constant for a second order reaction
C is not correct because these are the units of the rate constant for a third order reaction
Question
Answer Mark
Number
1(c) The only correct answer is D (1/16) 1
A is not correct because the rate would change by this factor for an overall first order reaction
B is not correct because the rate would change by this factor for an overall second order reaction
C is not correct because the rate would change by this factor for an overall third order reaction
Question
Answer Mark
Number
1(d) The only correct answer is C (Step 3) 1
A is not correct because 1 mol of Br and 2 mol of H+ are also involved up to and including the rate-determining step
B is not correct because 1 mol of Br is also involved up to and including the rate-determining step
D is not correct because 1 mol of Br2O2 is not involved in the rate-determining step
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