Qualification > Sciences

Chemistry'10 paper 3. PLEASE HELP IF YOU CAN :-[

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Helium:

--- Quote from: mohit1234 on June 05, 2010, 04:11:03 pm ---i think someone did
look here


--- End quote ---

LOL looks like i'm blind :-[

mohit1234:

--- Quote from: Helium on June 05, 2010, 04:12:26 pm ---LOL looks like i'm blind :-[

--- End quote ---

dont worry it happens sometimes :)
its happened to me also sometimes, i just look again b4 i post ;)

J.Darren:

--- Quote from: mohit1234 on June 05, 2010, 01:16:41 pm ---ethene    C2H4
propene    C3H6
butene    C4H8
pentene  C5H10
Hexene   C6H12
Septene  C7H14
Octene   C8H16

theres no methene cos CH2 cannot exist

alkenes have a double bond
alkanes dont hve a double bond

Alkanes formula - CnH2n+2
Alkenes formula - CnH2n
Alcohols formula - CnH2n+1OH
Carboxylic Acids formula - CnH2n+1COOH

Anything else??

--- End quote ---
Esters.

Single bond - saturated
Double bond - unsaturated

Alkenes - Test : Bromine water would turn from brown to colourless when added to alkenes.

NeoMarmar:
Test for alcohols (please tell me if I'm wrong) - add alcohol to acidified potassium dichromate (VI) and warm in water bath. The solution turns green if it's positive.

soulreapr_ninja:
June 2009 question # 5(b) How do i find the formual of the T phosphate thingy?? ??? :-\

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