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CHROMATE EQULIBRIUM: Cr2O72- (aq) + 2H2O (l)  « CrO42- (aq) + 3H3O+ (aq)   Step # Observations 1-Cr2O7 SOLUTION ORANGE SOLUTION 2-ADD NAOH YELLOW SOLUTION 2-ADD ACID ORANGE SOLUTION   Watch the YouTube video before answering questions: https://youtu.be/RjFW3smI1fY   Prepare a potassium dichromate (Cr2O72-) solution, which chromium ion is orange, and which is yellow? How did you know? Click or tap here to enter text.   How did the equilibrium shift when you added NaOH to the solution? Explain Click or tap here to enter text.   Explain how the equilibrium shifted when you added H2SO4 to the solution?

CHROMATE EQULIBRIUM: Cr2O72- (aq) + 2H2O (l)  « CrO42- (aq) + 3H3O+ (aq)   Step # Observations 1-Cr2O7 SOLUTION ORANGE SOLUTION 2-ADD NAOH YELLOW SOLUTION 2-ADD ACID ORANGE SOLUTION   Watch the YouTube video before answering questions: https://youtu.be/RjFW3smI1fY   Prepare a potassium dichromate (Cr2O72-) solution, which chromium ion is orange, and which is yellow? How did you know? Click or tap here to enter text.   How did the equilibrium shift when you added NaOH to the solution? Explain Click or tap here to enter text.   Explain how the equilibrium shifted when you added H2SO4 to the solution?

Chemical Principles in the Laboratory
Chemical Principles in the Laboratory
11th Edition
ISBN:9781305264434
Author:Emil Slowinski, Wayne C. Wolsey, Robert Rossi
Publisher:Emil Slowinski, Wayne C. Wolsey, Robert Rossi
Chapter36: Qualitative Analysis Of Group I Cations
Section: Chapter Questions
Problem 4ASA
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  1. CHROMATE EQULIBRIUM: Cr2O72- (aq) + 2H2O (l)  « CrO42- (aq) + 3H3O+ (aq)

 

Step #

Observations

1-Cr2O7 SOLUTION

ORANGE SOLUTION

2-ADD NAOH

YELLOW SOLUTION

2-ADD ACID

ORANGE SOLUTION

 

Watch the YouTube video before answering questions: https://youtu.be/RjFW3smI1fY

 

  1. Prepare a potassium dichromate (Cr2O72-) solution, which chromium ion is orange, and which is yellow? How did you know?

Click or tap here to enter text.

 

  1. How did the equilibrium shift when you added NaOH to the solution? Explain

Click or tap here to enter text.

 

  1. Explain how the equilibrium shifted when you added H2SO4 to the solution?
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