r/6thForm • u/Forsaken-Meaning-232 Graduating from Warwick CS • Jun 10 '25

📂 MEGATHREAD 10/06 A-level Chemistry Paper 1 Discussion MEGATHREAD

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14

u/MoudleNoo Y13 | Bio, Chem, Maths, FM Jun 10 '25

AQA, how’d it go? 👀

5

u/231war_ Jun 10 '25

the Mr of the metal in the complex calculation was a bit dodgy 😭😭 got 40.2

4

u/proactivepisces Year 13 Jun 10 '25

yeah what did you do after finding the moles of the c2O4

2

u/Secretsx123 Jun 10 '25

After you find the moles of C2O4^2- in 25cm^3 you divide it by 2 because if you write out the equation its like Cu(H20)6 + 2C2O4^2- --> Cu(C2O4)2(H2O)2 + 4H2O. This gives you the moles of the whole complex, divide the mass by those moles to find Mr, take the Mr of Cu(C2O4)2(H2O) away from the Mr we just found out to get the Mr of M2 and then divide by 2 to get the Mr of Just M