Edexcel IAL Chemistry Unit 01 - 26th of May, 2017

for the unpaired electrons, what choice was the carbon?
and for the Aluminium iodide, is int the charge of the Aluminium is more than the sodium ion? or was it something else?
i did not add the ionisation energies so will i lose all the marks?
and foe Hess, do you multiply the energy values by anything? i do not remember. how much did you get it by the way?

for the unpaired electrons, what choice was the carbon?
and for the Aluminium iodide, is int the charge of the Aluminium is more than the sodium ion? or was it something else?
i did not add the ionisation energies so will i lose all the marks?
and foe Hess, do you multiply the energy values by anything? i do not remember. how much did you get it by the way?

Guys what did you write for the question asking why the compound is less endothermic ?

guys for the multiple choice on making crystals, i put filtration, heating to concentrate, and then distillation or sumthing

It would be great if someone wrote out all the questions they remember, and from that make an unofficial mark scheme

From the Peak at m/e 28 in question 15 about Mass spectroscopy, was the specie silicon?

The very first question about ppm, was the answer 2.7? Which was C btw.

There was a question about which organic compound has a different molecular formula to its empirical formula. Was the answer B which was a cyclic ethene?

What was the answer to the value of the lattice energy?

From the Peak at m/e 28 in question 15 about Mass spectroscopy, was the specie silicon?

The very first question about ppm, was the answer 2.7? Which was C btw.

There was a question about which organic compound has a different molecular formula to its empirical formula. Was the answer B which was a cyclic ethene?

What was the answer to the value of the lattice energy?

Why was it difficult to measure the Enthalpy change? I put in "you cannot control decomposition reaction"

The species was Fe2+
Yeah it was 2.7
No the answer was A which was a cyclic pentane (C5H10)
The lattice energy I got was 2000 something, don't remember.

If I remember correctly, C5H10 was option B, a cyclic pentene. It was an alkene(CnH2n). The empirical formulae for it was CH2.

For the propagation question i used methane instead of ethane do i get any marks?

Hmmm, if the paper was easy for most of the candidates, the grade boundaries would probably go up
And the grade boundaries are chosen after the examiners finish marking all of the candidates' papers
Unfortunately, I changed my decision, so I'm doing exams in October, coz I needed more time for exam preparation as I'm self-teaching

How many of you think that the grade boundaries will go down?