Lab 4 Worksheet PDF

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Summary

CHEM 105B Lab Work...

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Lab 4 Worksheet Le Châtelier’s Principle

Watch the videos of the five reactions and their changes. Record your observations in the tables below. Reaction 1: [CoCl4]2-(aq) + 6 H2O (l) ⇄ [Co(H2O)6]2+(aq) + 4 Cl-(aq) Change

Observations

Added 12 M HCl

Added H2O

Placed in ice bath

Placed in hot water bath

Reaction 2: [Cu(H2O)4]2+ (aq) + 4 NH3 (aq) ⇄ [Cu(NH3)4]2+ (aq) + 4 H2O (l) Change Added concentrated NH3

Added more concentrated NH3

Observations

Reaction 3: CaCO3 (s) ⇄ Ca2+ (aq) + CO32- (aq) Change

Observations

Added solid CaCO3

Added 1 M HCl

Reaction 4: Zn2+ (aq) + 2 OH- (aq) ⇄ Zn(OH)2 (s) then Zn(OH)2 (s) + 2 OH- (aq) ⇄ Zn(OH)42- (aq) Change

Observations

Added 5 M NaOH

Added more 5 M NaOH

Added concentrated HCl

Reaction 5: HIn (aq) + H2O (l) ⇄ H3O+ (aq) + In¯ (aq) Change Added 1 M NaOH

Added 1 M HCl

Observations

Lab Report: 1. Complete the Equilibrium Labster Simulation Blackboard 2. Prepare an infographic that summarizes how a reaction will respond to reestablish equilibrium when the following changes are made: a. Adding/removing a reactant b. Adding/removing a product c. Increasing/decreasing the volume of the container d. Increasing/decreasing the temperature (exothermic and endothermic reactions)...