Question

Diff between vont haff factor and degree of dissoiation

Answer 1

Answer:

For most non-electrolytes dissolved in water, the van 't Hoff factor is essentially 1. For most ionic compounds dissolved in water, the van 't Hoff factor is equal to the number of discrete ions in a formula unit of the substance. ... Ion pairing occurs to some extent in all electrolyte solutions.The degree of dissociation of a substance is defined as the fraction of its molecules dissociating at a given time. ... Degree of dissociation (a) of NH3 is defined as the number of moles of NH3 dissociated per mole of NH3. if x moles dissociate from 'a' moles of NH3, then, the degree of dissociation of NH3 would be x/a.

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Answer 2

Answer:

Using a potentiometer, we can determine the emf of a cell by obtaining the balancing length l. Here, the fall of potential along the length l of the potentiometer wire is equal to the emf of the cell, as no current is being drawn from the cell. Then, or, ; where k is the potential gradient along the wire.................