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episodegirl903
02.07.2019 •
Chemistry
Calculate the standard potential for the following galvanic cell: ni(s) | ni2+(aq) || ag+(aq) | ag(s) which has the overall balanced equation: ni(s)+2ag+(aq)→ni2+(aq)+2ag(s) express your answer to three significant figures and include the appropriate units.
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Ответ:
The standard cell potential for the galvanic cell is 1.05 V.
The overall balanced equation of the reaction is;
Ni(s) + 2Ag+(aq) →Ni2+(aq) + 2Ag(s)
Since it is a galvanic cell, Nickel is the anode and silver is the cathode.
We know that;
E°cell = E°cathode - E°anode
E°cathode = -0.25 V
E°anode = 0.80 V
E°cell = 0.80 V - (-0.25 V)
E°cell = 1.05 V
Learn more: link
Ответ:
1.06 V
Explanation:
The standard reduction potentials are:
Ag^+/Ag E° = 0.7996 V
Ni^2+/Ni E° = -0.257 V
The half-cell and cell reactions for Ni | Ni^2+ || Ag^+ | Ag are
Ni → Ni^2+ + 2e- E° = 0.257 V
2Ag^+ 2e- → 2Ag E° = 0.7996 V
Ni + 2Ag^+ → Ni^2+ + 2Ag E° = 1.0566 V
To three significant figures, the standard potential for the cell is 1.06 V .
Ответ:
D, creating an electrostatic attraction!
Explanation: Apex, but also I know some of you just want to ACTUALLY learn, so in short it’s in the definition. You can find articles on this that are a quick read! Hope it helps!