Sciencemadness Discussion Board

Sulphur and lye

lvjrf - 26-12-2004 at 05:08

by searching i found

4S+4NaOH ---->2Na2S + Na2S2O3+2H2O

and this

S + NaOh ---> Sodium polysulphide + H2O

how we can control the two equations

Darkfire - 26-12-2004 at 12:05

Did you note consentrations?

neutrino - 26-12-2004 at 12:56

This has already been discussed in many places, for example in the polysulfides thread.

cyclonite4 - 27-12-2004 at 03:27

Yes, and lvjrf already asked this question in the 'Agricultural Sulfur' thread.

Yes

lvjrf - 27-12-2004 at 05:41

But no answer ?

Marvin - 27-12-2004 at 08:35

The latter equation is wrong and the answer is easier than it looks, some sulphur must be oxidised to balence and this happens the same with either product.

Aside from oxidised species, excess NaOH will produce sulphide, excess sulphur will form sulphides and disulphides, large excess polysulphides if it reacts that far. Fusing sulphur with sodium carbonate is the standard way to make mixed long chain polysulphides (the liver of sulphur method usually done with potash).