Answer :
When the sodium cation concentration was increased by a factor of 10. a s2- ion-selective electrode measured a decrease of 29.58 mv when the sulfide concentration increased by a factor of 10 because of option I and IV.
Some reactive electrodes consist of zinc, copper, lead, and silver. An inert electrode is a form of electrode which does not participate in a chemical reaction. some normally used inert electrodes include platinum, gold, graphite(carbon), and rhodium.
Electrodes are critical additives of electrochemical cells. They shipping produced electrons from one 1/2-cellular to any other, which produce an electrical charge. This fee is based off a widespread electrode gadget (SHE) with a reference ability of zero volts and serves as a medium for any cellular potential calculation.
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A Na ion-selective electrode increased in voltage by 59.16 mV when the sodium ion activity increased by a factor of 10. An S2 ion-selective electrode measured a decrease of 29.58 mV when the sulfide activity increased by a factor of 10. Why?
I. For cations, the measured potential increases by a factor of n x 59.16 mV for every 10-fold change in the activity of the cation, where n is the charge on the cation.
II. For anions, the measured potential decreases by a factor of n x 59.16 mV for every 10-fold change in the activity of the anion, where n is the charge on the anion.
III. For cations, the measured potential increases by a factor of 59.16 mV/n for every 10-fold
change in the activity of the cation, where n is the charge on the cation.
IV. For anions, the measured potential decreases by a factor of 59.16 mV/n for every 10-fold change in the activity of the anion, where n is the charge on the anion.
Select one:
a. I and IV
Ob. III and IV
c. II and III
d. I and II
e. None of the statements explains the behavior.