Answer:
The correct answer is: Yellow
Explanation:
<u>The given reaction at equilibrium</u>: A⁻(aq) + H₂O(ℓ) ⇋ HA(aq) + OH⁻(aq)
Given: Solution color at high product (HA) concentration = yellow
Solution color at low product (HA) concentration = red
Initial color of solution = orange
According to the Le Châtelier's principle, <u>addition of reactan</u>t to the reaction at equilibrium, shifts the equilibrium towards the right side of the reaction or towards the forward direction. <u>Therefore, favoring the product formation.</u>
So, if the <u>reactant A⁻(aq) is added to the reaction mixture</u>, more product (HA) is produced. <u>Therefore, the concentration of the product HA increases. </u>
Since the solution is <u>yellow in color at high product (HA) concentration</u>.<u> </u>
<u>Therefore, when the concentration of the product HA increases upon the addition of reactant A⁻(aq), the color of the solution changes from orange to yellow.</u>