How to dilute 2.0M of Sucrose specifically?

So basically im going to get a 2.0M of sucrose stock solution, will also ahve distilled water.

I need to have concs 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8 and 2.0M (which i have).

So i was wondering how i go about doing this with a burette, is there some sort of equation to follow?

Thanks for the help anyone +REP deffinately :smile:

Reply 1

Rach 2nd

To get a 1.8M solution you need to dilute the 2.0M stock solution 1.8/2.0 = 0.9 times, so add 9ml of stock solution to 1ml of water (you can scale the volumes depending on how much you need.)

Reply 2

Doji

so 1.6M would be 8ml of sucrose and 2 ml of water? ...like that?

Reply 3

digitalis

OK first of all, this seems like its for coursework...so use cm3 instead of mls :wink:

The magic equation you need is M1V1=M2V2...M1 is the Conc. of the stock solution and V1 is the volume used...M2 is the Conc. of the solution you desire (0.1,0.2,0.3...etc) and V2 is the volume you want of the desired solution.

Say you use your 2.0M stock and you want a 0.2M, 20 cm3 solution.

M1V1=M2V2
2x X=0.2x 20

X= 2 cm3 of the stock solution.

20-2 = 18 cm3 of distilled water needed.

So now add 2 cm3 of stock solution to 18cm3 of water, buretting carefully...the measurements need to be accurate to ensure the correct concentrations!