Give all questions answers with explanation

Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter3: Chemical Reactions
Section: Chapter Questions
Problem 136QRT
icon
Related questions
icon
Concept explainers
Question
Give all questions answers with explanation
Chemistry
Potassium chromate forms a bright yellow solution when dissolved in water. Potassium dichromate
forms an orange solution when dissolved in water. One way to make the dichromate ion is to add
acid to a chromate salt according to the following equation:
2 Cro?- (aq) + 2 H,0* (aq)= Cr,03- (aq) + 3 H20 (1)
When a student adds 2 drops of nitric acid to the yellow potassium chromate solution, the solution
turns an orange color. The student then adds 2 drops of sodium hydroxide and the solution turns
yellow. The student then adds 2 drops of sulfuric acid to the solution and it turns orange. The
student then adds 4 drops of sodium hydroxide and the solutions turns back to the original yellow
color.
1. Why did both the addition of nitric acid and sulfuric acid change the solution to an orange
color?
2. Why did the addition of sodium hydroxide change the solution back to a yellow color?
3. Why did it take more sodium hydroxide after the addition of sulfuric acid than nitric acid?
Transcribed Image Text:Chemistry Potassium chromate forms a bright yellow solution when dissolved in water. Potassium dichromate forms an orange solution when dissolved in water. One way to make the dichromate ion is to add acid to a chromate salt according to the following equation: 2 Cro?- (aq) + 2 H,0* (aq)= Cr,03- (aq) + 3 H20 (1) When a student adds 2 drops of nitric acid to the yellow potassium chromate solution, the solution turns an orange color. The student then adds 2 drops of sodium hydroxide and the solution turns yellow. The student then adds 2 drops of sulfuric acid to the solution and it turns orange. The student then adds 4 drops of sodium hydroxide and the solutions turns back to the original yellow color. 1. Why did both the addition of nitric acid and sulfuric acid change the solution to an orange color? 2. Why did the addition of sodium hydroxide change the solution back to a yellow color? 3. Why did it take more sodium hydroxide after the addition of sulfuric acid than nitric acid?
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Carbohydrates
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
Recommended textbooks for you
Chemistry: The Molecular Science
Chemistry: The Molecular Science
Chemistry
ISBN:
9781285199047
Author:
John W. Moore, Conrad L. Stanitski
Publisher:
Cengage Learning
General Chemistry - Standalone book (MindTap Cour…
General Chemistry - Standalone book (MindTap Cour…
Chemistry
ISBN:
9781305580343
Author:
Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:
Cengage Learning
Chemistry: Principles and Practice
Chemistry: Principles and Practice
Chemistry
ISBN:
9780534420123
Author:
Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781133611097
Author:
Steven S. Zumdahl
Publisher:
Cengage Learning
Chemistry: An Atoms First Approach
Chemistry: An Atoms First Approach
Chemistry
ISBN:
9781305079243
Author:
Steven S. Zumdahl, Susan A. Zumdahl
Publisher:
Cengage Learning