a) how enf of a galvanic cell is measured? b) what is liquid junction potential? how it develop? how it is removed
Answers
Answer:
The EMF of a galvanic cell is measured by
The potential differnce of a cell when no current is drawn out and when the cell is operating reversibly (i.e., very-2 slowly) is called the emf (electromotive force) of the cell. The measurement of the emf can by done by using a pote-tiometer.
The most common method of eliminating the liquid junction potential is to place a salt bridge consisting of a saturated solution of potassium chloride (KCl) and ammonium nitrate (NH4NO3) with lithium acetate (CH3COOLi) between the two solutions constituting the junction.
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Answer:
a. The potential differnce of a cell when no current is drawn out and when the cell is operating reversibly (i.e., very-2 slowly) is called the emf (electromotive force) of the cell. The measurement of the emf can by done by using a pote-tiometer.
b. The most common method of eliminating the liquid junction potential is to place a salt bridge consisting of a saturated solution of potassium chloride (KCl) and ammonium nitrate (NH4NO3) with lithium acetate (CH3COOLi) between the two solutions constituting the junction.