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Three metals X, Y and Z have the following reactions: Y will react with X2+, Z2+...
please do them all Choose 19. Choose best answer from drop-down menu: 3 points Calculate Ecell for the reaction 2 given the Ecell of reaction 1, Reaction 1: 2 Cr2+ + Cl2(g) → 2Cr3+ + 2C1 Reaction 2: Cr3+ + CH → Cr2+ + 1/2 Cl2(g) Ecell = 1.78 V Ecell = ? Choose 20. Choose best answer from drop-down menu: 2 points Consider the following standard reduction potentials in acid solution: E°(V) AP+ + 3e → Als) -1.66 AgBro+e...
Consider these generic half-reactions. Half-reaction E° (V) X+(aq)+e−⟶X(s) −1.30 Y2+(aq)+2e−⟶Y(s) 1.18 Z3+(aq)+3e−⟶Z(s) 0.92 Identify the strongest oxidizing agent. Z3+ X Y X+ Y2+ Z Identify the weakest oxidizing agent. Z Y X Y2+ Z3+ X+ Identify the strongest reducing agent. X+ Y Z3+ Y2+ Z X Identify the weakest reducing agent. Y Y2+ Z X+ X Z3+ Which substances can oxidize Z? X+ Y X Y2+
Consider these generic half-reactions. Half-reaction X+ (aq) + e X (s) Y+ (aq) + 2e-Y(s) 2 (aq) + 3e" - Zs) E (V) -1.30 1.18 0.92 Identify the strongest oxidizing agent. Identify the weakest oxidizing agent. or Oz Oz Ox Ozt OY+ ΟΥ - Ох Ох Ox+ Ο γρ. Identify the strongest reducing agent. Ο γλ- Oz OOO Identify the weakest reducing agent. Oz+ Ox+ Oy+ or OO Oz+ ох Ox+ 0 82+ Identify the strongest reducing agent. Identify the...
Evaluatef(x, y, z) dS. f(x, y, z) = x2 + y2 +z2 Evaluatef(x, y, z) dS. f(x, y, z) = x2 + y2 +z2
Consider these generic half-reactions. Half-reaction X+(aq) + e + X(s) Y2+(aq) + 2e →Y(s) Z3+(aq) + 3e —Z(s) E° (V) 1.52 -1.17 0.84 Identify the strongest oxidizing agent. Identify the weakest oxidizing agent. O 23+ Oz O O O O O O O O Identify the strongest reducing agent. Identify the weakest reducing agent. Oz O O O 23+ Ох O O O O O O Y2+ O O Which substances can oxidize Z? Ох OY Y2+
9. Three hypothetical metals all form 2+ cations and will be designated as X, experiments are carried out on these metals and solutions of the ions. The resu summarized by the equations given below: be designated as X, Y, and Z. A series of solutions of the ions. The results can be X(s) + y2+(aq) ---> X2+(aq) + Y(s) X(s) + Z2+(aq) -----> No reaction Arrange X, Y, and Z in order activities, listing the most active first: (1)_ (2)...
The gravitational field F(x,y,z) =cx /(x2 + y2 + z2)3/2 e1+ cy /(x2 + y2 + z2)3/2 e2+ cz/ (x2 + y2 + z2)3/2 e3 is a gradient field, where c is a constant, such that the field is rotation free. If we define f(x,y,z) = −c /(x2 + y2 + z2)1/2 , then show that (a) F = grad(f). (b) curl(F) = 0.
Three standard half-cells are constructed from unknown metals X(s), Y(s) , and Z(s) and their ions X2+(aq) ,Y2+(aq) , and Z2+(aq) . Different combinations of the three half-cells are tried when constructing various electrochemical cells. The following information is obtained from the different combinations: • An X(s)|X2+(aq) standard half-cell attracts anions when the other standard half-cell is Y(s)|Y2+(aq). The ?E0 = 0.50V. • In a standard cell between X(s) and Z(s), the cathode is X(s) and the E0net = 0.014V....
Consider the given vector field. F(x, y, z) = (9 / sqrt(x2 + y2 + z2)) (x i + y j + z k) Find the curl of the vector field. Then find Divergence
Problem 1: Consider the following problem x+y+1=1 x2 +y2+z2 =1 max f(x ,y,z)=er+y+1 subject to (a) Solve the problem. (b) Replace the constraints byx+y+1=1.02 and x2+y2+Z2-0.98. What is the approximate change in the optimal value of the objective function? (c) Classify the candidate points for optimality in the local optimization problem.