• 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 question

Messages
870
Reaction score
374
Points
73
pls can someone explain for me question 7d) which is " one mole of fat reacts with......................moles of iodine molecules."

the past paper is May/june 07
 
Messages
499
Reaction score
100
Points
38
Going through the entire question D..

100g of fat reacts with 86.2g of iodine.
884g of fat reacts with 762g of iodine.
Now work out moles:

Fat = 884/884 = 1 mol.

Iodine = 762/(127x2) = 762/254 = 3

=> 1 mole of fat reacts with 3 moles of iodine molecules.
=> There are 3 double bonds in one molecule of fat, as One mole of I2 reacts with 1 double bond.
 
Top