[tcraw033]

Hi.  I have tried everything for this question.  The question is:
A student wants to carry out an electrophilic addition of iodine (M.W. 253.81) to 1.0 g of linoleic acid (M.W. 280.45) in 15mL of CH2Cl2.  Calculate the volume of iodine solution (25% w/v in CH2Cl2) necessary for complete addition to this compound.

So far I have decided that I need to find the moles of linoleic acid and that there would be 2 moles of I2 for every mole of linoleic acid.

Please Help

[sjb]

Sounds good. Now, you have 1g of something with molecular weight 280.45, so how many moles is that? So how many moles of iodine do you need? So what mass of iodine do you need? ...

[tcraw033]

So I have 0.0036 moles of Linoleic acid using the weight and molar mass.  Now I multiply that by 2 to get the amount of moles of Iodine which is .0071 and therefore I have 1.81g of Iodine.  But how do I find the volume?  Does the 25% w/v in ch2cl2 come into play at all?

[sjb]

What does 25 % w/v mean?

[tcraw033]

Im not sure it was in the initial question

[tcraw033]

I think maybe it is just the concentration of the CH2Cl2 in the solution