Debye-huckel-onsager Equation Ppt < Firefox Instant >

“The salmon is your ion. The little fish are the ionic atmosphere. The equation tells you how much current is lost to the chaos.”

(Slide 19: References)

For the first time, no one was asleep. A student in the third row, a chemistry major on the verge of quitting, sat up straight. He pointed at the whiteboard. debye-huckel-onsager equation ppt

“The Debye length,” she said, pointing to a diagram of a central ion surrounded by a hazy cloud of opposite charges. “An ionic atmosphere. Imagine a celebrity at a gala. The celebrity is your central ion. The ‘atmosphere’ is the swarm of fans—the counter-ions—drawn close by electrostatic attraction.” “The salmon is your ion

M, ion-pairing and finite ion size effects cause significant deviations from the predicted straight line. A student in the third row, a chemistry

The ionic atmosphere is not static; it forms and reforms as the ion moves. When the central ion moves to a new position, it takes a finite time (relaxation time) for the old atmosphere to decay and a new one to form. This causes the atmosphere to be asymmetric—it is slightly behind the moving ion. This asymmetry creates an electrical pull opposite to the direction of the ion's motion, slowing it down.