Mine started vigorous reaction suddenly, while heating in your designed water bath, with emission of brown smoke up to roof. The solution first turned dark brown, then black and then green in a sec. When I poured it into water it turned white solution. That's what happened with me. Now sir please solve the mystery.....
@@vibzzlab well sir if I am not wrong in remembering, you said temperature should not exceed 60 degrees?I was trying to provide precise temperature according to your guidance.
When i added 5m sodium hydroxide solution i had tree layers one red the bottom orange the middle and light yellow at the top. Can you please explain it?
I found out what it is. Apparently, due to the presence of impurities, such as zinc dust, when a NaOH solution is added, part of the nitrobenzene will be reduced to azobenzene, whose color is bright orange, and the density is lower than nitrobenzene.
