New answers tagged

-2

If you want to save the iodine $\ce{I_2}$ from its solution, you may add enough $\ce{KOH}$ or $\ce{NaOH}$ in the mixture to transform all $\ce{I_2}$ into a colorless mixture of $\ce{KI}$ and $\ce{KIO_3}$. $$\ce{3I_2 + 6OH^- -> IO_3^- + 5I^- + 3H_2O}$$The remaining ethanol can then be evaporated by heating the nearly colorless solution to a temperature ...


2

Believe it or not, aniline was actually isolated from coal tar way back in 1834. A chemist called Friedlieb Runge isolated aniline along with phenol from coal tar. He discovered that aniline produced a beautiful blue color when treated with chloride of lime (calcium hypochlorite). He named it cyanol/kyanol and that was the birth of the first aniline dye but ...


Top 50 recent answers are included