8) In the reversible reaction [Co(H20)s]"(aq) + 4CI (aq) E>[Co(H20)2CI4]* (aq) + 4H20(1), the initial colorof 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 compoundb) [Co(H20)s]**(aq) is purple because adding CI (as HCI) shifted the reaction towardsproductsc) HCl is purple because adding it turned the reaction purpled) [Co(H2O),Cl4]*(aq) is purple because adding Cl (as HCI) shifted the reaction towardsproducts9) In the reversible reaction Fe * (aq) + SCN (aq) E → FESCN2* (aq), the reactants are yellowish and theproduct is red.Why are iron (III) nitrate and potassium thiocyanate used to create this reaction mixture?a) iron and thiocyanate are spectator ionsb) iron and thiocyanate are colorlessc) nitrate and potassium are spectator ionsd) nitrate and potassium are purple

[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

[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

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Consider the insoluble compound zinc carbonate, ZnCO3. The zinc ion also forms a complex with hydroxide ions. Write a balanced net ionic equation to show why the solubility of ZnCO3 (s) increases in the presence of hydroxide ions and calculate the equilibrium constant for this reaction. For Zn(OH)4²-, Kf = 2.9×10¹5. Be sure to specify states such as (aq) or (s). K = + Submit Answer + Retry Entire Group 2 more group attempts remaining
Write the Ksp expression for Cu(OH)2 in terms of [Cu2+] and [OH–].
Lactase is an enzyme that breaks down the sugar lactose which is commonly found in dairy products. Some people develop lactose intolerance as they grow older and the amount of lactase enzyme in their gut diminishes. Since the enzyme is commonly found in the gut of humans it can withstand a pH that is very acidic, ranging from a pH of 2-7. A student decided to do an experiment to determine how the pH of a solution affects lactase enzyme activity. Lactase works by breaking lactose into its two component sugars of glucose and galactose. To conduct the experiment the student prepared a solution of lactose and placed it into 5 different test tubes. A pH buffer solution was then added to each test tube with a pH of 2.0 in the first tube, 4.0 in the second, 6.0 in the third, 8.0 in the fourth, and a 10 pH in the fifth. Next, the enzyme lactase was added in equal amounts to each test tube and allowed to sit for ten minutes white the enzyme reacted with the lactose. At the end of the ten…
A solution is prepared such that the initial concentration of A2+ is 1.50x103 M and the initial concentration of X is 4.60x10-3 M. A2+ and X are allowed to react as shown below to establish equilibrium with the complex AX2+. In a colorimetry experiment, the equilibrium concentration of the complex AX2+ is determined to be 8.9x10-4 M. A2* (aq) + X (aq) =Ax2+ (aq) %3D Complete the ICE table below by selecting the correct value or expression to place in the ICE table from the drop-down menu. A2+ (aq) X (ад) АХ2+ (aq) Initial concentration Change in concentration Equilibrium concentration expression Equilibrium concentration value