For a Chromium-Nickel cell [Cr3+ + 3e- --> Cr (-0.73)] & [Ni2+ +2e- --> Ni (-0.23)] 1M for both elements: 5. Calculate E 6. Calculate G = -nFe 7. Show and give example of how G is related to K

Calculate the emf of the Daniell cell at 25.0°C when the concentrations of CUSO4 and ZnSO4 are 0.492 M and 0.122 M, respectively. 4.0 V What would the emf be if activities were used instead of concentrations? (The Y values for CUSO4 and ZNSO4 at their respective concentrations are 0.0641 and 0.144, respectively.) 4.0 V

2. (20pts)An electrochemical cell is constructed with a piece of copper wire in a 0.830 M solution of Cu(NO3)2 and a piece of chromium wire in a 0.720 M solution of AgNO3. a. Write a balanced equation for the spontaneous reaction that occurs in this cell b. Calculate the potential at 25°C for the cell. c. Sketch a diagram for this cell. i. Label the anode and cathode. ii. Show the direction of electron flow in the external circuit. iii. Show the direction of movement of nitrate ions. d. Determine the value of AG for the cell. e. Present the short-hand notation for the cell.

Consider the following reaction at 298K. Fe2+ (aq) + 2 Cu* (aq) - Fe (s) + 2 Cu2+ (aq) Which of the following statements are correct? Choose all that apply. Odelta G° <0 ☐ E° cell <0 On = 2 mol electrons OK<1 The reaction is product-favored.