• We need your support!

    We are currently struggling to cover the operational costs of Xtremepapers, as a result we might have to shut this website down. Please donate if we have helped you and help make a difference in other students' lives!
    Click here to Donate Now (View Announcement)

Chemistry: Post your doubts here!

Messages
515
Reaction score
1,447
Points
153
http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Chemistry (9701)/9701_s09_qp_2.pdf
Second Variant
Q5
I didn't understand the question itself is it saying 2CH3CHO Or just CH3CHO
And i need help for part a)


oh XD :p
Sorry, when i read fast i make mistakes. :(
its ok... first i thought that i've made mistake :p


n for Q5 (a) whenever the formula is CnH2nO2 then its either carboxylic acid or an ester... but for ths part as it is sayng that it must contain -OH group then u have to draw the structural formula for the carboxylic acid...

2 is the mole of CH3CHO that is chngng into one mole of C4H8O2
 
Messages
3,225
Reaction score
15,036
Points
523

Elimination. A functional groups gets replaced by another group

Reduction is gain of hydrogen by the removal of oxygen
Oxidation is gain of oxygen and loss of Hydrogen
(OIL-RIG)

Hydrolysis bond formation with the elimination of a water molecule

and dehydration is pulling back h20 from the compound (H and OH) -Removing H


Elimation. Can be Halogens (I , Br , Cl)
Reduction. NABH4 . LiAlH4 , Zn, H2
Oxidation : Kmno4 , K2Cr2O7 , H2so4

Hyrdrolysis. Agno3 , H20

Dehyrdration : H3PO4 , H2so4
 
Messages
88
Reaction score
1,093
Points
133
Elimination. A functional groups gets replaced by another group + creating water

Reduction is gain of hydrogen by the removal of oxygen
Oxidation is gain of oxygen and loss of Hydrogen
(OIL-RIG)

Hydrolysis bond formation with the elimination of a water molecule

and dehydration is pulling back h20 from the compound (H and OH) -Removing H


Elimation. Can be Halogens (I , Br , Cl)
Reduction. NABH4 . LiAlH4 , Zn, H2
Oxidation : Kmno4 , K2Cr2O7 , H2so4

Hyrdrolysis. Agno3 , H20

Dehyrdration : H3PO4 , H2so4
dun u think!! elimination is more than substitution u told :'|
 
Top