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?
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.
Explanation
Correct Option
cNo explanation available
Video Explanation
No video available
Post your Contribution
Share:
Discussions (2)
Emmanueloluwaseun
2 years ago
The forward reaction, in this case, results in the formation of Cr2O2−7(aq), which is orange in color. Therefore, the equilibrium shift will lead to an increase in the concentration of Cr₂O₂⁻₇(aq), resulting in an overall more orange color in the solution.
So, the correct answer is:
D. The color changes from yellow to orange.
