igcse M/J 2022 41 chem

it was the easiest year out of 2016-2022 for this syllabus litrraly freee marks :)

some questions i remmember --- properties of equiliberuim _ awnser: forward rate = back ward rate and the constant conc.

draw a 3 carbons carboxylic acid

stiochem awnsers : 0.005 / 0.0025 / 0.125

the table for electrons protons etc..

13 13 13

13 14 13

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and the empirical formula was c2h4o

then the molecular one was c2h4o for the MR of 88

q1 -- oxygen was used 3 times ( as a fuel)-(iron to steel)

alcohol formula _ Cnh2n+1oh

the enthalpy thing final awnser was -4 ( exothermic)

good luck tmr for english 0511 :)

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best thing is the electrolysis wasnt even in / no questions about energy or shifting / organic was easyyyyy / not alot for the reactivity series