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Chemistry: Post your doubts here!

Metanoia

Metanoia

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FarahMJ said:
Help with this one plz, ans is B
04601-9711aa28-3732-4207-a83d-2d39684041d5.png
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You can check out post #9267 on page 464
 
Metanoia

Metanoia

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Thought blocker

Thought blocker

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student1415 said:
AS SALAMO ALAIKUM
can some one plzz help me with q 28 , 37 & 39
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w04_qp_1.pdf
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28)
1 u know is right
2) when two ethane radicals combine
3) when combination of ethane radical is chlorinated

37)
Remember the termination step. Two free radicals join to form a molecule. Break this molecule CH3CHCl-CHClCH3 into this CH3*CHCl and *CHClCH3. These are two free radicals formed in the propagation step. Whenever these questions come. Break the central bond and check if two free radicals are formed.

39)
♣♠ Magnanimous ♣♠
 
♣♠ Magnanimous ♣♠

♣♠ Magnanimous ♣♠

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student1415 said:
AS SALAMO ALAIKUM
can some one plzz help me with q 28 , 37 & 39
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w04_qp_1.pdf
Click to expand...
it's simple!
see 39) when there is an OH the reaction can occur with sodium metal and that is given in the book which means tatement 1 is CORRECT!
statement 3) overall molecular formula is C5H12O4 so it cannot be CH3O which means this is wrong and due to this statement 2 is also eliminated so answer is D
 
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sweet.sugar said:
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_w06_qp_1.pdf
Plz help me with 3 questions from o/n/6
Q9-C
Q11-B
Q25-B
Thanku :)
Click to expand...
well i am not sure about 9 amd 11
25) it should be B na bcoz there are 3n carbon and 6n Hydrogen so if we balance the equation we get 9 moles of oxygen on the product side so for balancing the moles of oxygen in reactact obviously it should 4.5 because it already O2 so simple calculation for verfication --> 4.5 *2 ==> 9 so the overall equation is balanced :)
I hope you got it!
 
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