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0.1%

Posted: 26 Oct 2015, 08:37
by Labbie
Ok its Monday, I need 500ml of 0.1% Acetic acid,
0.1% 500ml of citric Acid
& 0.1% 500ml of Ascorbic acid.
:crazy: :coffee: and my head is at home.

Re: 0.1%

Posted: 26 Oct 2015, 09:07
by curie
0.1% = 0.1 grams per 100mL (Mass/volume)
so for citric and ascorbic acid, weigh out 0.5 grams, dissolve in 500mL.

For acetic acid you will need to work out what % acetic acid you have in your stock solution. Glacial , according to the laboratory is18M at 99 -100%, so my calcs, 2M should be 11%, so 4.5mL of 2M up to 500mL.

If my calcs are totally off, someone let me know.

Re: 0.1%

Posted: 26 Oct 2015, 09:12
by Labbie
Thank you Curie, Mad monday

Re: 0.1%

Posted: 27 Oct 2015, 08:37
by Rakhi Karumathil
Hi,

i couldn't get in to the Preparation of 0.1% acetic acid.
In our lab we have 80% acetic acid. How can we prepare 0.1% in 500ml. Can someone explain it little more further??
I can't think as i am brain dead today:-(

Regards
Rakhi

Re: 0.1%

Posted: 27 Oct 2015, 09:18
by rae
My chem teacher uses C1V1=C2V2 for any concentration calculation.
so:
0.1%x 500 = 80% x V2

So I think the volume would be 0.625ml in 500ml

Re: 0.1%

Posted: 27 Oct 2015, 13:43
by Rakhi Karumathil
Thank you so much Rae, my brain is working now :clap3: \:D/


Regards
Rakhi