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Elechtrochemistry

Elechtrochemistry. 17. How much? – Faraday’s constant. F = (6.022 x 10 23 mol -1 ) x (1.602192 x 10 -19 C) = 96,484 C mol -1. Faraday. Electricity. Current = Charge/time - I = Q/t [Ampere]=[Coulomb]/[sec]. Potential = Current x Resistance - E = I R (Ohms law)

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Elechtrochemistry

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  1. Elechtrochemistry 17

  2. How much? – Faraday’s constant. F = (6.022 x 1023 mol-1)x (1.602192 x 10-19 C) = 96,484 C mol-1

  3. Faraday

  4. Electricity Current = Charge/time - I = Q/t [Ampere]=[Coulomb]/[sec] Potential = Current x Resistance - E = I R (Ohms law) [Volt]=[Ampere] [Ohm]

  5. So what is resistance? NB: Potential is relative!

  6. Work = Potential x Charge - W = E q [Joule] = [Volt] [Coulomb]

  7. NERNST EQUATION

  8. NERNST EQUATION At 25 oC

  9. NERNST EQUATION Walther Hermann Nernst 1864–1941

  10. NERNST EQUATION

  11. NERNST EQUATION

  12. THERMODYNAMICS and equilibrium

  13. THERMODYNAMICS and equilibrium

  14. NERNST EQUATION

  15. 0.50 M AgNO3(aq) 0.010 M Cd(NO3)2(aq)

  16. 0.50 M AgNO3(aq) 0.010 M Cd(NO3)2(aq)

  17. 0.50 M AgNO3(aq) 0.010 M Cd(NO3)2(aq) My way:

  18. Ion selective electrode

  19. Ion selective electrode

  20. Ion selective electrode

  21. Ion selective electrode

  22. Ion selective electrode

  23. Ion selective electrode

  24. Ion selective electrode

  25. Ion selective electrode CHEM-7 is a group of blood tests that provides information about your body's metabolism. The test is commonly called a basic metabolic panel. BUN: 7 to 20 mg/dL CO2 (carbon dioxide): 20 to 29 mmol/L Creatinine: 0.8 to 1.4 mg/dL Glucose: 64 to 128 mg/dL Serum chloride: 101 to 111 mmol/L Serum potassium: 3.7 to 5.2 mEq/L Serum sodium: 136 to 144 mEq/L

  26. Ion selective electrode Selectivity And interference

  27. NERNST EQUATION Measure E to determine 1 unknown concentration (…..so fix the other concentrations)

  28. Reference electrodes

  29. Reference electrodes My way:

  30. Reference electrodes

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