What change will occur to the equilibrium mixture
( 2CrO^{2-}_4(aq) + 2H^+(aq) ⇔ Cr_2O^{2-}_7(aq) + H_2O(l) ) when excess sodium hydrogen solution is added?
( 2CrO^{2-}_4(aq) + 2H^+(aq) ⇔ Cr_2O^{2-}_7(aq) + H_2O(l) ) when excess sodium hydrogen solution is added?
-
A.
A yellow precipitate of Cr(OH)3 is formed -
B.
An orange precipitate of Cr(OH)3 is formed -
C.
The colour changes from orange to yellow -
D.
The colour changes from yellow to orange -
E.
There is no visible reaction.