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Chemistry p1 doubt

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Deadly_king:

--- Quote from: yasser37 on November 18, 2010, 10:33:52 am ---yes paper 11 question 13 says
How does conc. sulfuric acid act when added to NACL
acid
oxidizing agent
reducing agent
acid and oxidizing agent

also m8 if u can explain in w04 paper 1 Q 10 and 19

--- End quote ---

Acid.......see the post before yours. ;D

Nov 04 p1

19. You should write the full equation and then balance it.

(NH4)2SO4 + 4O2 -----> H2SO4 + 2HNO3 + 2H2O

Answer is D

Deadly_king:
Jun 10 p1

I think no22 has already been answered. ;)

28. It's because the carbon carrying the bromine atom is also attached to three methyl groups. The latter have a tendency to push the bonding electrons to the carbon carrying an electronegative atom such that it becomes less attracted to nucleophiles like OH-. This is why the rate of reaction is not affected.

Answer is D

b]29[/b]. I'll proceed by elimination.

Butan-1-ol and 2-methyl-propan-1-ol are first to be rejected since they are primary alcohols. ;)

2-methylpropan-2-ol can form only one type of alkene due to free rotation. The carbon carrying the hydroxyl group is connected to three other methyl group of atoms and should have been able to form 3 alkenes but all of them are identical.

Butan-2-ol should have formed only two types of alkenes but one of them show cis-trans isomerism. Hence it forms 3 types of alkenes. ;)

Hope it helps :)

yasser37:
Thanks a lot m8


really helped me there

I appreciate it

Deadly_king:

--- Quote from: yasser37 on November 18, 2010, 12:42:56 pm ---Thanks a lot m8


really helped me there

I appreciate it

--- End quote ---

No problem dude :)

Just ace the paper tomorrow. ;D

Dania:
HELP!
The answer is C.

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