t6) Are your observation and explanation in (15) consistent with Le Châtelier\'s

Question

t6) Are your observation and explanation in (15) consistent with Le Châtelier's principle? Briely explain IlIl Studying the [CoCl41 lon/[Co(H20l2 lon Equilibrium (17) What is the color of the solution (Step 12)? hat changes do you observe when you add concentrated HCl (Step 13)? (19) What change do you observe when you add distilled water (Step 14)? (20) Write the net ionic equation for the ICoCLy) ion/ICo(H,o),12+ ion equilibrium. (21) What,if any, experimental evidence do you have that the equilibrium is affected by the addit concentrated HC1? Briefly explain. 51

Explanation / Answer

[Co(H2O6)]2+ + 4Cl- = [CoCl4]2- + 6H2O

[CoCl4]-2 = blue, [Co(H2O)6]+2 = purple/redish)

Q17

initially, if we have only CoCl4, then this is blue

Q18

when we add Hcl, Cl- ions incerases in solutino

if this is true, then

[Co(H2O6)]2+ + 4Cl- = [CoCl4]2- + 6H2O

CoCl4 will be produced, then blue color icnreases

Q19

addition of water decreases dilution

then, the left side is affected, meaning that the solution color turns even purple/redish

Q20

net ionic:

[Co(H2O6)]2+(aq) + 4Cl-(aq) = [CoCl4]2-(aq) + 6H2O(l)

Q21

addition of Hcl will change the color of the solution, which eventually stops in a certain color, this is proof of equilbirium

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