AQA • Chemistry

AS CHEMISTRY 7404/1 Paper 1 Inorganic and Physical Chemistry Mark scheme June 2022

AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry JUNE 2022 This question is about ionisation energies of Group 2 elements. . Explain why the first ionisation energy of the Group 2 elements decreases down the group. [2 marks] . Give an equation, including state symbols, to represent the process that occurs when the third ionisation energy of magnesium is measured. [1 mark] . Explain why the third ionisation energy of magnesium is much higher tha...

AS CHEMISTRY 7404/2 Paper 2 Organic and Physical Chemistry Mark scheme June 2022

AS CHEMISTRY Paper 2 Organic and Physical Chemistry JUNE 2022 This question is about rates of reaction. Potassium manganate(VII), KMnO4, reacts with sodium ethanedioate, Na2C2O4, in the presence of dilute sulfuric acid. 2 MnO –(aq) + 16 H+(aq) + 5 C O 2–(aq)  2 Mn2+(aq) + 8 H O(l) + 10 CO (g) The reaction mixture is purple at the start and goes colourless when all the MnO –(aq) ions have reacted. The rate of reaction can be measured as 1000 where t = the time taken for t...

2022 Chemistry AQA AS Paper 2 QUESTION PAPER ONLY, to use for revision only. Any questions or want to negotiate a price message me.

AQA GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2020. GCSE COMBINED SCIENCE: TRILOGY 8464/C/2H Chemistry Paper 2H Mark scheme June 2020 Version: 1.0 Final Mark Scheme *206g8464c2h/MS* MARK SCHEME – GCSE COMBINED SCIENCE: TRILOGY – 8464/C/2H – JUNE 20 2 Mark schemes are prepared by the Lead Assessment Writer and considered, together with the relevant questions, by a panel of subject teachers. This mark scheme includes any amendments made at ...

AS level paper 1 Chemistry 2021

These are detailed Revision Notes for Topic 1.12 of AQA A-Level Chemistry (Acids, Bases and Buffers). They were written by me using a combination of the textbook and class notes. I will also be uploading the other topics and creating bundles. Topics Included: - Defining an acid - The pH scale - Weak acids and bases - Acid-base titrations - Choice of indicators for titrations - Buffer solutions

These are detailed Revision Notes for Topic 1.10 of AQA A-Level Chemistry (Kp). They were written by me using a combination of the textbook and class notes. I will also be uploading the other topics and creating bundles. Topics Included: - Equilibrium constant Kp for homogenous systems

These are detailed Revision Notes for Topic 1.9 of AQA A-Level Chemistry (Rate Equations). They were written by me using a combination of the textbook and class notes. I will also be uploading the other topics and creating bundles. Topics Included: - The rate of chemical equations - The rate expression and order of reaction - Determining the rate equation - The Arrhenius equation - The rate determining step