Le Chatelier's

[waywardtigerlily]

Hello, I was wondering if I could get some help, or at least lead in the right direction.

I am working on my lab report for Nitration of Bromobenzene and there is a question that is:

Precipitation of the mononitration product of bromobenzene prevents dinitration from occuring. Explain how this experimental result is an application of the LeChatelier's principle and given your prediction, write a chemical equation for the equilibrium involving reaction of sulfuric and nitric acids.

I am a little too lost on this to even begin. And help would be great
Thanks,
K