chemistry

[monso]

Difference between 2N and 2M H2S04 for example

[Labbie]

Taken from the Lab book page 4.

Normal solution (N)
A Normal solution contains one gram-equivalent weight of solute per litre. An equivalent weight is the amount of substance that is able to combine with or displace 1 atom of hydrogen. A gram-equivalent is the amount of substance in grams that is able to combine with or displace 1 gram-atom of hydrogen (1.008g.) Solutions of the same normality will react completely with each other if equal volumes are used. The gram-equivalent of a substance depends on the reaction in which it is involved. For this reason it is now common practice to express concentrations in molarity. Older books still use normal solutions.

a 2N-solution contains 2 gram-equivalents per litre of solution.
a 5N 5
0.1N 0.1g

Hope this helps

[monso]

Thanks for your reply Sue

[sunray18]

I used to have use Normal [N] solutions when I worked in research.. what a PAIN! Molar solutions so easy to calculate

[Narelle01]

i noticed this is some of the labels in chemwatch - but i made the solutions to M, so didn't worry - but thanks for the explanation