We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
Click here to Donate Now (View Announcement)
Why did you subtract 2x and not x from two moles of p , because the molar ratio between Q and p is the same so what ever was lost from P ,exactly forms Q , so that's why we shouldn't take x??MS Word + Screenshot + MS Paint + Tinypic.com
hmm nice try but u make it sound like the bond formed is a ionic bond not a covalent. good use of the word messy though xDumm i guess the Cl- from the 1st mess of a molecule (
thank youumm i guess the Cl- from the 1st mess of a molecule (
ummm see the compounds are converted into ions sort of... think about it ....hmm nice try but u make it sound like the bond formed is a ionic bond not a covalent. good use of the word messy though xD
no problemthank you
because chlorine is a strong oxidizing agent so it will be strongly reduced by 2 electrons instead of one. As you go down the halogen group the element becomes less strongly as an oxidising agent and more strong as a reducing agent
The lattice energy of CuCl2 is more negative than CuCl, (that is more exothermic) therefore more energy is released, therefore more stable and therefore more readily forms.
I think it's D because NaOH is the strongest base out of the 4 given and so will be more strongly ionised in solution (equilibrium of ion dissociation is more likely to be to the right side rather than left) and so it would give a more accurate end-point than the rest, not sure if my reasoning is correct though if anyone would care to correct me?
i am stuck in this question 2..i would appreciate it if someone can draw the graph and show it...I got the same results. What did you do in the graph question? What did you plot in the x- and the y-axis? And what is the shape? I plotted solubility against temperature which, according to the mark scheme, is correct. But I seem to be getting a curve, aand the ms and the er rejects that. The questions also asks us to extrapolate the two lines, so they have to be straight lines.
What I would would is.urrgghh anyone pls tell me the best way to revise chemistry
if i do the past papers of only my variant i.e. variant 2 do u think i have it covered that way??
its just that a levels never seems like its fully prepared u know... like even at the last moment there's always this one thing left... this onw thing that u don't know .... if u know wat i mean.... i mean sure i m giving them the first time but i am already starting to get this feeling u know and even wen i asked around everyone said the same thing... so plz help me out on some tips here.... preferably on paper 2 at the moment. thanks
and Best of Luck all of u. Remember me and everyone else in your prayers
1)can any one tell me the mechanism of seperation whether adsorbtion or partionin HPLC
2) the stationery phase in HPLC
please?
ooo thankuu
I have actually done the revision thingy but yeah i think i'll do the one section a day but according to my schedule i only have till friday to do aall my chem bcz need to leave 3 days of prep for maths too... -.- all of em lined up as they r in this horrible datesheet :O but still hav i got my bases covered with that? *desperate calls* there is a better option do that variant which has lowest threshhold as it is usually more difficult.urrgghh anyone pls tell me the best way to revise chemistry
if i do the past papers of only my variant i.e. variant 2 do u think i have it covered that way??
its just that a levels never seems like its fully prepared u know... like even at the last moment there's always this one thing left... this onw thing that u don't know .... if u know wat i mean.... i mean sure i m giving them the first time but i am already starting to get this feeling u know and even wen i asked around everyone said the same thing... so plz help me out on some tips here.... preferably on paper 2 at the moment. thanks
and Best of Luck all of u. Remember me and everyone else in your prayers
For almost 10 years, the site XtremePapers has been trying very hard to serve its users.
However, we are now struggling to cover its operational costs due to unforeseen circumstances. If we helped you in any way, kindly contribute and be the part of this effort. No act of kindness, no matter how small, is ever wasted.
Click here to Donate Now
