Edexcel IAL Chemistry Unit 1 (WCH01 )/ May 27 June 2016

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Ethane and propane are used to make ethene and propene by dehydrogenation reaction. This ethene and propene is used to make poly ethene and poly propene. But since, Ethane and Propane are required for the manufacture of Shane gas, the production of poly ethene and poly propene decreases. :smile:

oh my gosh i wrote that! i hope its correct.

Reply 321

MrBioBombastic

Original post by omar5478

Definitely not easier,I solved jan 2016 the night of the exam and lost 2 marks in it while I think that I will lose about 5-8 in this one.

lol u even lost two marks in jan 16 so ofcourse u will loose 5-8 in june lol
in jan 16 u were supposed to loose not a single mark xD as it was a piece of a cake

Reply 322

wenogk

Hey guys I made a thread for the people who are doing Unit 2 chemistry http://www.thestudentroom.co.uk/showthread.php?t=4127029

Reply 323

katenell

Original post by Saad69

68 is too damn high for an A grade no matter how the paoer was

Posted from TSR Mobile

true

Reply 324

AkibKhan

Hey guys in the very first question abt mass spectroscopy what equation did you give for the simplest ionization of gaseous sample M ?

Reply 325

Arzam45

Original post by AkibKhan

Hey guys in the very first question abt mass spectroscopy what equation did you give for the simplest ionization of gaseous sample M ?

M(g) ---> M+(g) + e

Reply 326

Sandy_Vega30

Original post by Arzam45

Did you get -2868.5 kJ/mol ?

That's exactly what I got.

Posted from TSR Mobile

Reply 327

Arzam45

Original post by Sandy_Vega30

That's exactly what I got.

Posted from TSR Mobile

I hope it's correct or else the half hour argument with my classmate would be useless! :smile:

Reply 328

AkibKhan

Original post by Arzam45

M(g) ---> M+(g) + e

Check this out :'( Now do you see why there was some space given after M(g) ?

MassSpec Handout 1.PDF329.0KB

Reply 329

katenell

Original post by Sunethra

What are you referring to? mcq? or about the definition for isotopes?

same element with different number of neutrons but same number of proton and electron
thats what i wrote
can any one confirm if this was correct

Reply 330

dpoojaraa

Original post by katenell

same element with different number of neutrons but same number of proton and electron
thats what i wrote
can any one confirm if this was correct

Isotopes can still have different number of electrons, can't they?

Reply 331

AkibKhan

Original post by katenell

same element with different number of neutrons but same number of proton and electron
thats what i wrote
can any one confirm if this was correct

Bang on Correct!

Reply 332

omar5478

Original post by Saad69

Man u are so damn good at chemistry :redface:

Not really, just solved a **** ton of past papers lol.

Reply 333

omar5478

Original post by Arzam45

M(g) ---> M+(g) + e

Same, are you sure of it though ??

Reply 334

omar5478

Original post by MrBioBombastic

lol u even lost two marks in jan 16 so ofcourse u will loose 5-8 in june lol
in jan 16 u were supposed to loose not a single mark xD as it was a piece of a cake

Ok Einstein, my bad.

My argument still holds though, if I lose more marks in this paper than in the other paper, that means that this paper is harder, thus lower boundries.

And please be a bit more sympathetic with us lower mortals, and learn how to write with proper grammar.

(edited 7 years ago)

Reply 335

omar5478

Original post by AkibKhan

Check this out :'( Now do you see why there was some space given after M(g) ?

I cant find this in neither the syllabus nor the past papers, how did you know that ??

Reply 336

Arzam45

Original post by AkibKhan

Check this out :'( Now do you see why there was some space given after M(g) ?

I don't think that space meant anything because in that equation in the attachment you sent if you cancel an electron on the L.H.S, one electron cancels on the R.H.S as well.