m of the 1) Complex lon should shift when you add HaO to the mixture in Well C 1
ID: 555665 • Letter: M
Question
m of the 1) Complex lon should shift when you add HaO to the mixture in Well C 1. Briefly explain (40) Predict the direction in which the equilibrium (ao) What was the initial color of the misture in Well C1 ve add H20 to the mixture in Well C-12 (31) What color change do you cbserve when you (41) Briefly explain how your observations do or do not support your prediction in (40) (32) What color change do you observe when you add concentrat od HCl tothe mixture in wot i? Wo color add o.1M AgNO, solution to the mixture in Well C-12 Change (33) What color change do you observe when you 42) Predict the direction in which the equinfibrium should shift when you acdd concentrated HCI to the mix (34) What color change do you observe when you ture in Well C1. Briefly explain. add H2O ta the mixture in Well C2? ange do you observe when you add ethyl alcohol to the mixture in Well C-2? violet (36) What color change do you observe when you (43) Briefly explain how your observations do or do not support your prediction in (42) add H2O to the mixture in Well C3? (37) What color change do you observe when you heat the mixture from Well C2? (44) Predict the direction in which the equilibrium should shift when you add AgNO3 solution to the mix- ture in Well C-1? Briefly explain. (38) What color change do you observe when you cool the warm mixture from Well C-2? (39) Write the net ionic equation for the equillb- rium involving the hexaaquocobalt(ll) ion in this exper ment (45) Briefly explain how your observations do or do not support your prediction in (44) EQUL 404/Studying Chemical EquilibriaExplanation / Answer
40.
CoCl42- (aq) + 6 H2O (aq) <-----> Co(H2O)62+ (aq) + 4 Cl- (aq) + Energy
Blue Pink
1. If we add water to it then the concentration of H2O will be increased and the equilibrium will be shifted towards forwarding direction (Exothermic reaction). As more H2O molecules are reacting with CoCl42-.
41) Yes, the observations do support the prediction of 40) as the color is changed to light pink.
42) If we add HCl to it then the concentration of Cl- will be increased and the equilibrium will be shifted in the reverse direction(Endothermic reaction). As more Cl- molecules are interacting with Co(H2O)62+.
43)Yes, the observations do support the prediction in 42) partially as there is no change in color.If temperature is given to it then it will return to its initial blue color as energy was lost in the forward direction.
44) Due to the addition of AgNO3, the chloride reacts with AgNO3 to form AgCl in the form of a white precipitate. This precipitate will make the solution cloudy.
i.e CoCl42- + AgNO3 <-----> AgCl + CoNO3 + Cl
45) Yes, the observations do support the prediction in 44) as there is formation of a cloudy pink solution.
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