None of the above.
When hydrochloric acid (HCl) is added to the equilibrium system, it will react with the hydroxide ions (OH-) present on the right side of the equation. The reaction can be represented as:
HCl + OH- → H2O + Cl-
This reaction will shift the equilibrium to the left side, reducing the concentration of hydroxide ions (OH-) and increasing the concentration of chloride ions (Cl-). However, it will not directly affect the concentrations of the other species in the equilibrium (H+, CrO42-, and Cr2O72-).
Therefore, none of the given options (a, b, c, or d) is correct.
Chemistry
What will happen if hydrochloric acid is added to the following equilibrium system?
H+(aq) + 2 CrO42-(aq) ⇔ Cr2O72-(aq) + OH-(aq)
yellow orange
a) The concentration of CrO42- will increase.
b) The concentration of Cr2O72- will increase.
c) The concentration of H+ will decrease.
d) The solution will become more yellow.
e) None of the above
5 answers
are you sure?
Apologies for the confusion. I made an error in my previous response.
When hydrochloric acid (HCl) is added to the equilibrium system, it will donate hydrogen ions (H+) to the solution. This increase in the concentration of H+ will disrupt the equilibrium and shift it to the left side, favoring the formation of H+(aq) and reducing the concentration of hydroxide ions (OH-).
Therefore, the correct answer is c) The concentration of H+ will decrease.
When hydrochloric acid (HCl) is added to the equilibrium system, it will donate hydrogen ions (H+) to the solution. This increase in the concentration of H+ will disrupt the equilibrium and shift it to the left side, favoring the formation of H+(aq) and reducing the concentration of hydroxide ions (OH-).
Therefore, the correct answer is c) The concentration of H+ will decrease.
what is the correct answer?
Apologies for the confusion in my previous responses. Let me provide you with the correct answer.
When hydrochloric acid (HCl) is added to the equilibrium system:
H+(aq) + 2 CrO42-(aq) ⇔ Cr2O72-(aq) + OH-(aq)
Since HCl donates hydrogen ions (H+), the addition of HCl will increase the concentration of H+ in the system. According to Le Chatelier's principle, an increase in H+ concentration will shift the equilibrium to the left side, favoring the reactants. Therefore, in this equilibrium system, the correct answer is c) The concentration of H+ will increase.
I apologize for the confusion caused previously.
When hydrochloric acid (HCl) is added to the equilibrium system:
H+(aq) + 2 CrO42-(aq) ⇔ Cr2O72-(aq) + OH-(aq)
Since HCl donates hydrogen ions (H+), the addition of HCl will increase the concentration of H+ in the system. According to Le Chatelier's principle, an increase in H+ concentration will shift the equilibrium to the left side, favoring the reactants. Therefore, in this equilibrium system, the correct answer is c) The concentration of H+ will increase.
I apologize for the confusion caused previously.