sorry if this has been asked before, i did a search and couldnt find any results. Explain fully what happens when [tex]H^+[/tex] is added to a mixture containing [tex]BaCrO_4(s)[/tex] and [tex]CrO_4^2^-[/tex]. The overall equation of ions in this experiment is [tex]H^+(aq)~+~2CrO_4^2^-\rightleftharpoons~Cr_2O_7^2^-(aq)~+~OH^-(aq)[/tex] when HCl is added to a solution of K2CrO4 and NaOH and Ba(NO3)2, the precipitate dissolves and the solution becomes orange. im pretty stumped, but im assuming K2CrO7 is present because it is orange in colour and that the precipitate from before becomes aqueous again but im not sure what the percipitate is (possibly Ba(OH)2??) or what is involved in the reaction. any push in the right direction is very appreciated!