ExperimentLe ChateLiers PrinCiPLe

Le Chateliers PrincipleAngela Carraway, Ph.D. & Peter Jeschofnig, Ph.D. Version 42-0166-00-01Lab RepoRt assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiments questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students writing of lab reports by providing this information in an editable file which can be sent to an instructor.Questions

Part I

2+In Part I the reaction you observed was Mg(OH)2 (s) Mg

(aq) + 2 OH- (aq). Compare the colors

you observed in the experiment and answer these questions:

A. Which way should the equilibrium shift when HCl is added? How do your results support your answer?

B. Which way should the equilibrium shift when Na2EDTA is added? How do your results support your answer?

C. Is this reaction endothermic or exothermic? How do you know?

Part II

In Part II the reaction you observed was HSO4 (aq) + H2O (l) H3O (aq)+SO4

. Compare the colors

-+2-you observed in the experiment and answer these questions:

A. Which way should the equilibrium shift when Na2SO4 is added? How do your results support your answer?

B. Which way should the equilibrium shift when NaHSO4 is added? How do your results support your answer?

C. Is this reaction endothermic or exothermic? How do you know?

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