Homework Answers
ANSWER
HMR <--------> H+ + MR-
Red Yellow
The reaction is an equilibrium reaction and the problem can be solved by Le Chatliers Principle
(A) ADDITION OF ACID: If acid is added the equilibrium will shift to LEFT. Because on addition of acid the H+ concentration will increase, so to consume the extra H+ equilibrium will shift to left.
The solution will be RED colored, as more of HMR (red colored substance) is formed.
Due the shift of equilibrium to LEFT more HMR (red colored substance) is formed.
(B) ADDITION OF BASE:
When a base is added the H+ will be consumed. This will result in more dissociation of HMR. As a result the equilibrium shift to RIGHT.
Yellow Color solution will be observed.
When a base is added the H+ will be consumed. This will result in more dissociation of HMR. As a result the equilibrium shift to RIGHT. As more of MR- will form the solution will become yellow colored.
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In the example equilibrium system, a drop of methyl orange indicator was added. For this indicator, the solution will be red in high concentrations of HO+, and the solution will turn yellow in low concentrations of H,O+ Initially the equilibrium solution was orange. What color is expected after the addition of the NaC,H,O2? Explain your reasoning. a. b. Initially, the equilibrium solution was orange. What color is expected after the addition of a strong...
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