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Exam (elaborations)

AS AQA CHEMISTRY PAPER 2 2018 ALL QUESTIONS AND CORRECT ANSWERS WITH EXPLANATION (100% GUARANTEE PASS).
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June 2025

2024/2025

A+
How many structural isomers with an unbranched carbon chain have the molecular formula C4H8Br2? A 4 B 5 C 6 D 7 - CorreCt Answers -C Ethanol can be made from glucose by fermentation. C6H12O6 → 2C2H5OH + 2CO2 In an experiment, 268 g of ethanol (Mr = 46.0) were made from 1.44 kg of glucose (Mr = 180.0). What is the percentage yield? A 18.6% B 36.4% C 51.1% D 72.8% - CorreCt Answers -B Which species could act as a nucleophile? A BH3B NH4 + C PH3 D SiH4 - CorreCt Answers -C
munenebeth20
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Exam (elaborations)

AS AQA chemistry paper 2 Exam 2024/2025
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5

April 2025

2024/2025

A+
AS AQA chemistry paper 2 Exam 2024/2025 /Explain, in general terms, how a catalyst increases the rate of a reaction. - Answer-provides a different route With lower activation energy /.Explain, in terms of collision theory, the effect of increasing the concentration of hydrogen peroxide on the rate of reaction. - Answer-more moles in given volume so successful collisions are more frequent /.State why the student should use sodium hydroxide solution rather than water for the final rins...
Brainariam
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