100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
Previously searched by you
Pearson Edexcel International Advanced Level Chemistry International Advanced Level UNIT 4: Rates, Equilibria and Further Organic Chemistry QP JANUARY 2024$12.99
Add to cart
Pearson Edexcel International Advanced Level Chemistry International Advanced Level UNIT 4: Rates, Equilibria and Further Organic Chemistry QP JANUARY 2024
1 view 0 purchase
Course
Pearson Edexcel International Advanced Level
Institution
Pearson Edexcel International Advanced Level
Pearson Edexcel International Advanced Level Chemistry International Advanced Level UNIT 4: Rates, Equilibria and Further Organic Chemistry QP JANUARY 2024
Pearson Edexcel International Advanced Level Chemistry International Advanced Level
UNIT 4: Rates, Equilibria and Further Organic Chemistry QP JANUARY 2024
[Document subtitle]
user [Date] [Course title]
, Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Monday 8 January 2024
reference WCH14/01
Morning (Time: 1 hour 45 minutes) Paper
Chemistry
International Advanced Level
UNIT 4: Rates, Equilibria and Further Organic
Chemistry
You must have: Total Marks
Scientific calculator, Data Booklet, ruler
Pearson Edexcel International Advanced Level Chemistry International Advanced Level
UNIT 4: Rates, Equilibria and Further Organic Chemistry QP JANUARY 2024
• Use black ink or ball-point pen.
• If pencil is used for diagrams/sketches/graphs it must be dark (HB or B).
• Fill in the boxes at the top of this page with your name,
• centre number and candidate number.
• Answer all questions.
Answer the questions in the spaces provided
Instructions
– there may be more space than you need.
• The total mark for this paper is 90.
• The marks for each question are shown in brackets
• – use this as a guide as to how much time to spend on each question.
In the question marked with an asterisk (*), marks will be awarded for your ability to
structure your answer logically, showing how the points that you make are related or
• follow on from each other where appropriate. A Periodic Table is
Information
printed on the back cover of this paper.
• Read each question carefully before you start to answer it.
• Show all your working in calculations and include units where appropriate.
• Try to answer every question.
• Check your answers if you have time at the end.
Advice
You should aim to spend no more than 20 minutes on this section.
For each question, select one answer from A to D and put a cross in the box . If you change
your mind, put a line through the box and then mark your new answer with a cross .
1 The equation for a reaction is shown.
A(g) + 2B(g) 3C(s) + 4D(g)
(a) Some collisions between reactant molecules do not lead to the
formation of products.
What is the best explanation for this?
(1)
A the reactant concentrations are too low
B the collisions do not have sufficient energy
C the reaction is at equilibrium
D the molecules do not collide in the correct ratio
(b) What are the units of the equilibrium constant, Kp , for this reaction?
(1)
A atm
B atm–1
C atm4
D atm–4
(Total for Question 1 = 2 marks)
2 Nitrogen(V) oxide, N2O5 , decomposes in a first order
reaction. At 45 °C, the half-life for this reaction is 1400 s.
In an experiment, the initial concentration of nitrogen(V) oxide is 1.0 mol dm –
3
. What is the concentration, in mol dm–3, of nitrogen(V) oxide after 4200 s?
A 0.875
B 0.500
C 0.250
D 0.125
,DO NOT WRITE IN THIS AREA DO NOT WRITE IN THIS AREA
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Papersbyyamak. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
