Methyl orange, HMO, is a common acid-base indicator. In solution it ionizes according to the equation: HMO(a q) (red)=H* (a q) + MO minus (a q)(yellow) What color will the solution turn if H* is added and why? Red. H* concentration increases. Reaction moves to the left. Red. H* concentration decreases. Reaction moves to the left. Yellow. H* concentration decreases. Reaction moves to the right. Yellow. Ht concentration increases. Reaction moves to the right. Red. H* concentration decreases. Reaction moves to the right.

Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
icon
Related questions
Question
**Methyl Orange as an Acid-Base Indicator**

Methyl orange, HMO, is a common acid-base indicator. In solution, it ionizes according to the equation:

\[ \text{HMO(aq) (red)} \rightleftharpoons \text{H}^+ \text{(aq)} + \text{MO}^- \text{(aq)(yellow)} \]

**Question:**

What color will the solution turn if H⁺ is added and why?

- ○ **Red.** H⁺ concentration increases. Reaction moves to the left.
- ○ **Red.** H⁺ concentration decreases. Reaction moves to the left.
- ○ **Yellow.** H⁺ concentration decreases. Reaction moves to the right.
- ○ **Yellow.** H⁺ concentration increases. Reaction moves to the right.
- ○ **Red.** H⁺ concentration decreases. Reaction moves to the right.

**Discussion:**

When H⁺ is added to the solution, the increase in hydrogen ion concentration will shift the equilibrium to the left, according to Le Chatelier's Principle. This will cause the solution to turn red as the equilibrium favors the formation of HMO (aq).
Transcribed Image Text:**Methyl Orange as an Acid-Base Indicator** Methyl orange, HMO, is a common acid-base indicator. In solution, it ionizes according to the equation: \[ \text{HMO(aq) (red)} \rightleftharpoons \text{H}^+ \text{(aq)} + \text{MO}^- \text{(aq)(yellow)} \] **Question:** What color will the solution turn if H⁺ is added and why? - ○ **Red.** H⁺ concentration increases. Reaction moves to the left. - ○ **Red.** H⁺ concentration decreases. Reaction moves to the left. - ○ **Yellow.** H⁺ concentration decreases. Reaction moves to the right. - ○ **Yellow.** H⁺ concentration increases. Reaction moves to the right. - ○ **Red.** H⁺ concentration decreases. Reaction moves to the right. **Discussion:** When H⁺ is added to the solution, the increase in hydrogen ion concentration will shift the equilibrium to the left, according to Le Chatelier's Principle. This will cause the solution to turn red as the equilibrium favors the formation of HMO (aq).
1. Yellow. H⁺ concentration increases. Reaction moves to the right.
2. Red. H⁺ concentration decreases. Reaction moves to the right.
3. Yellow. H⁺ concentration increases. Reaction moves to the left.
4. Yellow. H⁺ concentration decreases. Reaction moves to the left.
5. Red. H⁺ concentration increases. Reaction moves to the right.
Transcribed Image Text:1. Yellow. H⁺ concentration increases. Reaction moves to the right. 2. Red. H⁺ concentration decreases. Reaction moves to the right. 3. Yellow. H⁺ concentration increases. Reaction moves to the left. 4. Yellow. H⁺ concentration decreases. Reaction moves to the left. 5. Red. H⁺ concentration increases. Reaction moves to the right.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY