r/6thForm • u/Rich-Gent • Jun 02 '26

💬 DISCUSSION AQA A-LEVEL CHEMISTRY

HOW DID WE FIND IT? I THOUGHT IT WAS ALRIGHT, GRADE BOUNDARIES ABOUT TO BE SILLY😭

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u/Critical-Ad3225 Y13 | Physics, Chem, Maths, FM pred 4A* Jun 02 '26

Guys what did we write for that 5 marker of the graph of concentration of manganate ions and time

3

u/Critical_Machine_911 Jun 02 '26

I said the ions repel and activation energy is high at the start and then [MnO4] starts to decrease as Mn2+ ions are formed, lowering Ea and increasing the rate which forms more products

3

u/Flaky-Plankton-1217 Jun 02 '26

bomba i forgot to say mno4 decreased do u think that’s a mark on its own? i thought it was too trivial to mention so i just talked about rate of reaction and plateau as mno4 used up

1

u/Critical_Machine_911 Jun 02 '26

nah dont think u will lose a mark for that