[Co(H2U)2CI4]*"(aq) + 4H;0(1), the initial color 8) In the reversible reaction [Co(H20)6] (aq) + 4Cr (aq) of the reaction mixture was pink. When concentrated HCI (aq) was added to the reaction mixture, the color changed to purple. Which reactant is purple and why? a) [Co(H2O)s]*(aq) is purple because it is a cobalt compound b) [Co(H20);]**(aq) is purple because adding Cl" (as HCI) shifted the reaction towards products c) HCl is purple because adding it turned the reaction purple d) [Co(H20),Cl.]*(aq) is purple because adding Cl (as HCI) shifted the reaction towards products

Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter15: Principles Of Chemical Reactivity: Equilibria
Section: Chapter Questions
Problem 61GQ: A Boric acid and glycerin form a complex B(OH)3(aq) + glycerin(aq) B(OH)3 glycerin(aq) with an...
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8) In the reversible reaction [Co(H20)s]"(aq) + 4CI (aq) E>[Co(H20)2CI4]* (aq) + 4H20(1), the initial color
of the reaction mixture was pink.
When concentrated HCl (aq) was added to the reaction mixture, the color changed to purple.
Which reactant is purple and why?
a) [Co(H2O)s]*(aq) is purple because it is a cobalt compound
b) [Co(H20)s]**(aq) is purple because adding CI (as HCI) shifted the reaction towards
products
c) HCl is purple because adding it turned the reaction purple
d) [Co(H2O),Cl4]*(aq) is purple because adding Cl (as HCI) shifted the reaction towards
products
9) In the reversible reaction Fe * (aq) + SCN (aq) E → FESCN2* (aq), the reactants are yellowish and the
product is red.
Why are iron (III) nitrate and potassium thiocyanate used to create this reaction mixture?
a) iron and thiocyanate are spectator ions
b) iron and thiocyanate are colorless
c) nitrate and potassium are spectator ions
d) nitrate and potassium are purple
Transcribed Image Text:8) In the reversible reaction [Co(H20)s]"(aq) + 4CI (aq) E>[Co(H20)2CI4]* (aq) + 4H20(1), the initial color of the reaction mixture was pink. When concentrated HCl (aq) was added to the reaction mixture, the color changed to purple. Which reactant is purple and why? a) [Co(H2O)s]*(aq) is purple because it is a cobalt compound b) [Co(H20)s]**(aq) is purple because adding CI (as HCI) shifted the reaction towards products c) HCl is purple because adding it turned the reaction purple d) [Co(H2O),Cl4]*(aq) is purple because adding Cl (as HCI) shifted the reaction towards products 9) In the reversible reaction Fe * (aq) + SCN (aq) E → FESCN2* (aq), the reactants are yellowish and the product is red. Why are iron (III) nitrate and potassium thiocyanate used to create this reaction mixture? a) iron and thiocyanate are spectator ions b) iron and thiocyanate are colorless c) nitrate and potassium are spectator ions d) nitrate and potassium are purple
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