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Author Topic: Chemistry P6 18/5/010  (Read 24863 times)

Offline °o.O-hash94-O.o°

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Re: Chemistry P6 18/5/010
« Reply #15 on: May 14, 2010, 09:22:20 pm »
Awesome work!  ;)
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Offline BlackBunny103

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Re: Chemistry P6 18/5/010
« Reply #16 on: May 15, 2010, 04:04:05 am »
Very comprehensive notes.
Thanxx + rep :D
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Offline WARRIOR

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Re: Chemistry P6 18/5/010
« Reply #17 on: May 15, 2010, 07:47:52 am »
thanks !!! ::)

iv given you all the paper 6 info out of my head now. i dont think iv missed anything and if  did please inform. all ican do now is wish you good luck in the exam ..hope it comes easy...

PRAY FOR ME  PLEASE!  AND GOOD LUCK
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Offline DEGO

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Re: Chemistry P6 18/5/010
« Reply #18 on: May 15, 2010, 09:20:19 am »
good job kimo dont forget in decomposition reaction tht nitrates of group 1 form nitrites + O2
and decopostion of sulphate u forgot it
group 1   = no decomposition
other metals=  metal oxid + SO3
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Offline WARRIOR

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Re: Chemistry P6 18/5/010
« Reply #19 on: May 15, 2010, 11:40:07 am »
Quote from: DEGO on May 15, 2010, 09:20:19 am
good job kimo dont forget in decomposition reaction tht nitrates of group 1 form nitrites + O2
and decopostion of sulphate u forgot it
group 1   = no decomposition
other metals=  metal oxid + SO3

oh thx !..didnt see tht mistake !

ok ill add that..cheers
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But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa

Offline WARRIOR

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Re: Chemistry P6 18/5/010
« Reply #20 on: May 15, 2010, 02:57:21 pm »
october /novermber 2001 ..last question..good solubility question !
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Offline DEGO

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Re: Chemistry P6 18/5/010
« Reply #21 on: May 15, 2010, 06:11:54 pm »
its an easy one man isnt it tht koola cola?
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Offline WARRIOR

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Re: Chemistry P6 18/5/010
« Reply #22 on: May 15, 2010, 06:30:26 pm »
nnop fertilisers :P
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NO secrets to SUCCESS , it is the result of 1.HARD WORK 2.GOOD PREPARATION 3.LEARNING FROM FAILURE
But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa

Offline rahuldevnani93

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Re: Chemistry P6 18/5/010
« Reply #23 on: May 15, 2010, 07:23:52 pm »
Need may/june 2001 chemistry paper 6 mark scheme urgent !!
email to thunder.rahul@hotmail.com
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Offline guMnam

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Re: Chemistry P6 18/5/010
« Reply #24 on: May 15, 2010, 07:40:32 pm »
Thanks alot:D awsome work dude!!
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Offline WARRIOR

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Re: Chemistry P6 18/5/010
« Reply #25 on: May 15, 2010, 09:38:35 pm »
Quote from: rahuldevnani93 on May 15, 2010, 07:23:52 pm
Need may/june 2001 chemistry paper 6 mark scheme urgent !!
email to thunder.rahul@hotmail.com
cant find it online but i have it on my book..so if you want the asneers to anythin ask me..
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NO secrets to SUCCESS , it is the result of 1.HARD WORK 2.GOOD PREPARATION 3.LEARNING FROM FAILURE
But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa

6394

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Re: Chemistry P6 18/5/010
« Reply #26 on: May 16, 2010, 06:39:05 am »
amazing wrk  :) ;) :D ;D ::) :P
bt i dnt gt this part  PREPARATION OF SALTS
1.TITRATION METHOD.2.EXCESS REACTIVE METAL 3. EXCESS WEAK INSOL METHOD . 4PRECIPTATION
HEAT : NO                   /          NO                            /           YES +STIR                 /   NOP
RCTN. : NEURALISATION/  REDOX                             / NEURTALISATION                     / DOUBLE DCOMPOSITION
cn u xplain me a bit more detaild Thanks
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Offline WARRIOR

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Re: Chemistry P6 18/5/010
« Reply #27 on: May 16, 2010, 09:12:29 am »
Quote from: 6394 on May 16, 2010, 06:39:05 am
amazing wrk  :) ;) :D ;D ::) :P
bt i dnt gt this part  PREPARATION OF SALTS
1.TITRATION METHOD.2.EXCESS REACTIVE METAL 3. EXCESS WEAK INSOL METHOD . 4PRECIPTATION
HEAT : NO                   /          NO                            /           YES +STIR                 /   NOP
RCTN. : NEURALISATION/  REDOX                             / NEURTALISATION                     / DOUBLE DCOMPOSITION
cn u xplain me a bit more detaild Thanks

sure
 but what do you want to know exactly..??

in conclusion
titration is used whn they ask you 2 make a soluble salt ex ( naso4) : we use hcl + naoh ..as naoh is soluble ..if u add any extra naoh the solution becomes alkalne..so we need to kno exact amoutns to obtain a salt of ph 7
excess reactive metal : make mgso4..just add magnesium ribbon to h2so4..and since mg is more reactiv than h it will displace and simple salt is formed
weak insol method : a metal thats weaker than hydrogen for ex.. cu(11) oxide..we do the same as ^ but we just haev to heat..!
preciptiation :  to make lead iodide (insol) we add 2 soluble stuff toogher and they make an insoluble ppt.. ADD LEAD NITRATE ADN POTASSIUM IODIDE :) 

so what do you want to knno exacgtly?
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But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa

Offline DEGO

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Re: Chemistry P6 18/5/010
« Reply #28 on: May 16, 2010, 10:15:00 am »
kimo cn u do me a favour whn u update ur post and add anything cn u post a reply to notify ys
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Offline WARRIOR

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Re: Chemistry P6 18/5/010
« Reply #29 on: May 16, 2010, 10:16:44 am »
Quote from: DEGO on May 16, 2010, 10:15:00 am
kimo cn u do me a favour whn u update ur post and add anything cn u post a reply to notify ys
i update evrytime i learn somethin new form past papers! if u look again ull find new things ! By the way i just added a CLAMP to the appartus ..coincidence !
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NO secrets to SUCCESS , it is the result of 1.HARD WORK 2.GOOD PREPARATION 3.LEARNING FROM FAILURE
But it ain't how hard you hit; it's about how hard you can get hit, and keep moving forward-Balboa
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