AQA CHEM5 A2 Chemistry - 19th June 2013

Anyone know where I can find the grade boundaries for the CHEM5 specimen paper?

Anyone know where I can find the grade boundaries for the CHEM5 specimen paper?

Do we need to know the structure of EDTA4- for this exam?

Most likely deltaG will remain constant

It should be here: A-level-mark-converter.xlsx

Do we need to know the structure of EDTA4- for this exam?

the specimen paper doesnt hqve grade boundaries :-)

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you don't get full marks for a correct final answer in calculations do you?? should you aim to round to 3 sig figures during calculations?

Doubt it - though they have asked for the structure for ethandioate....

if we were asked for the colour of aqueous chromium, would it be ruby or green? cos the book says you rarely see the ruby colour?

It should be here: A-level-mark-converter.xlsx

Would anyone be able to help me with ionic equations, I understand that you have to remove spectator ions then balance charges, but I have trouble identifying the spectator ions

E.g. June 2011 4 (e) (ii)
"Write an ionic equation in each case to show how aluminium oxide reacts with hydrochloric acid and with sodium hydroxide" - how do you know the states of the reactants and products?

Why are chelates more stable than normal metal-aqua ions?

what happens when delta g remains constant?

What I have attached may help.