Normal solution (N)

[Labbie]

I am hoping someone will be able to help me. What is Normal solution. I have been asked for a 0.1N solution of HCL

[lizzieb]

Hi Sue,

A Normal Solution contains one gram-equivalent weight of solute per litre.

See The Laboratory, pg 4. If you don't have the book, I'll photocopy the page for you (on Monday) and fax it - quite a lengthy explanation accompanies this basic sentence, with examples.

[Labbie]

Hi Liz,

I have that book, but it is well used, and I am missing many pages 4 through to 16. If you could fax page 4 that will be great.

02 9823 7662 attn Sue science

Thank you

[lizzieb]

Done, with pleasure!

[Labbie]

Hi Liz,

Thank you for that page. So good of you

[Bob]

Normality = molarity x No of H ions (for acids)
eg H2So4 18M = 36N
H3PO4 15M = 44N ?
from the table in the Ajax chemical reference book.

[Robb]

Hi All,

Very old SI unit for concentration.... One would have to be careful when using di, tri protic acids and Alkali's though.. otherwise you would be out by a factor of 2, 3 etc..

Cheers,

Robb.....

[Labbie]

Thank you Robb, I had not come across this before. The teacher had said he used it many many times before. But I do thank you for your time. It all makes sense now.

[Ocker]

A Normal Sol'ncontains the gram equivalent of the dissolved substance in a litre
But to be specific with H Cl 1M = N with Sulphuric 1M = 2N Don't try to run with it Just get out of trouble without looking a bit silly

[RosalieM]

I came across a summary page of concentrations (w/w, v/w, M, m, N) after reading this thread which I assume came with an order at some stage from Southern Biological. If I had a scanner I would scan and attach it, but maybe you could ask them for a copy. It's called "Confused by Concentration" and it looks very useful. I might even laminate it for future reference!
Rosalie