Edexcel Unit 1 June 2011 Discussion.

Thought it was a very easy paper. The MCQ's were pretty straightforward - the only tricky one was the atomisation enthalpy of Sulphur.

Question 18 was a bit tricky, but they made up for it with that question on Metallic Bonding - those were free marks.

I said that you can be sure when the reaction has fully completed.

suppp jukeboxing, everyone on question 18 reckons that we did it right remember we're going from crystals to an aqueous copper sulphate solution. so we have to break down the crystals by heating it xD, on the first page of the enthalpy question 18 it said that delta 1, which was the reaction we had to carry out, ( that it is endothermic ) so we put heat in to turn it into a solution, not turn it into another crystal as i think you mentioned yesterday lol !

i said use a beaker, lol stupid me, the beaker is a poor insulator LOL

I chose 750cm cubed for the multiple choice question on volume. Because its at constant pressure and temp., there are 4 moles on the left side which produce 1000cm cubed so the 3 moles on he right side would produce 750cm cubed.

wasn't it at 1atm but 650degrees... hence not at standard conditions?

yeah but it was constant for both sides of the formula so any effect applied to the right hand would be applied to the left hand, I am not sure though lol. And you got the ionization energy question right )

ahh I see, damn yay! will try to remember some more questions to post here for when I get back from college!

i put 750cm3
and also put 278 for the bond enthlpy of S

nice, that's what I got too.

were we supposed to draw normal arrows or half arrows for the initiation reaction on the free rad question??

were we supposed to draw normal arrows or half arrows for the initiation reaction on the free rad question??

were we supposed to draw normal arrows or half arrows for the initiation reaction on the free rad question??