PLEASE ANSWER THOROUGHLY AND BREAK DOWN EACH STEP. THANK YOU!! Characteristics of Chemical Equilibrium The purpose of this...

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Chemistry

PLEASE ANSWER THOROUGHLY AND BREAK DOWN EACH STEP. THANKYOU!!

Characteristics of Chemical Equilibrium

The purpose of this lab is to investigate how changing variousfactors affect an equilibrium system. This lab consists of fourindependent activities. Each activity changes a component(concentration, temperature, and pressure) in an equilibriumsystem. Students observe how the changes affect the equilibriumsystem and analyze the changes using Le Chatelier’s Principle.

Please explain your answers to the following questions using LeChatelier’s Principle.

Activity A: Nature of Equilibrium

           HIn (aq)    ↔    H+(aq)     +     In–(aq)        …… (A)

           Colorless                                  Pink

           H+(aq)       +    OH-(aq) →    H2O (l)

If HCl solution is added to the solution in equilibrium A, wouldthe solution become more pink or less pink?

If NaOH solution is added to the solution, which direction wouldthe equilibrium shift to? Would the color become more pink or lesspink when NaOH solution is added to the equilibrium?

Activity B: Effect of Concentration

           Fe3+(aq)     +       SCN-(aq)      ↔    FeSCN2+(aq) ………   (B)

           yellow                   colorless                red

           Fe3+(aq)      +       H2PO4-(aq)  →    FeH2PO42+(aq)

           yellow                   colorless               colorless

Which direction would the equilibrium shift to ifFe(NO3)3 solution is added to the equilibriumB?

Which direction would the equilibrium shift to ifNa3PO4 is added to the equilibrium B?

Activity C: Effect of Temperature

  1. Fe3+(aq)     +      SCN-(aq)      ↔    FeSCN2+(aq)       is anexothermic reaction.

yellow               colorless                    red

Would the color of the solution becomemore red or less red if the temperature is increased? What happensif the temperature is decreased?

  1. Co(H2O)62+(aq)    +    4Cl–(aq)    ↔    CoCl42- (aq)    +    6H2O (l)

pink                                                              blue

When the solution is heated toboiling, it turns from pink to blue.

Is this reaction endothermic orexothermic?

Bonus: if AgNO3 is added tothe above blue solution, would the solution change color back topink? If HCl is then added to the solution, would the color changeagain?

Activity D: Effect of Pressure

2 CO2(g)   +      H2O(l)   ↔  CO2 (aq)   +  H+(aq)     +  HCO3-(aq)

The reaction forms equilibrium in a large syringe withchangeable volume.

Would the solution become more acidic or less acidic when thevolume is increased? What happens if the volume is decreased?

Answer & Explanation Solved by verified expert
4.1 Ratings (580 Votes)
A On adding HCl to the reaction H will increase resultingin higher concetration of product As per Le Chateliers principlethe system wants to remain in equilibrium However due to increasein concentration of product reaction will move in backwarddirection and solution will become less pinkOn adding NaOH as    See Answer
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