CHM135H1 Lecture Notes - Lecture 35: Qi, Nernst Equation, Intensive And Extensive Properties
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CHM135H1 Full Course Notes
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Chm135h1 f - lecture 35 - chapter 18 (5) Current: denoted as i, is measured in units of amperes: units of coulombs/sec, rate of flow of electrons. Voltage difference creates a flow of electrons: steady state flow well-described by. V = ir: r is the resistance : describes scattering of electrons as they move through material: like friction, measured in ohms. Total charge transferred: q = i t. If both pv and electrical work can be done: E = p v nf + q. H = e + p v + v p = q + v p nf . = q t s nf . If process is quasi-static (reversible), then q = t s. Is called the cell potential: measured in volts. Is an intensive quantity: not dependent on size of system. Describes the electrical potential drop between initial and final states. If > 0, then process occurs spontaneously.
