Electrode potentials

1

(c) (i) Define standard electrode potential, Eo

 ____________ when a half-cell is connected to a standard _____________  electrode under _____________  conditions , (298 K, 1 atm, solutions 1 mol dm–3).

Other Answer Choices:

voltage

hydrogen

standard

1

A salt bridge is used in an electrochemical cell. State the function of the salt bridge. Explain your answer

_________  move from the salt bridge to complete the ____________ 

Sn2+ + 2Fe3+ → Sn4+ + 2Fe2+

(ii) Calculate the e E ɵ cell = _______

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When an alkene is added to a solution of potassium manganate(VII), the purple solution turns colorless. In terms of electron transfer and oxidation number, how does the manganese change in this reaction?

1

The standard hydrogen electrode uses an electrode of platinum coated in a finely divided form of the metal called platinum black. What is the purpose of this coating?

1

	a	b	c	d
3a)
3b)

Sn2+ + 2Fe3+ → Sn4+ + 2Fe2+(ii) Calculate the e E ɵ cell = _______

When an alkene is added to a solution of potassium manganate(VII), the purple solution turns colorless. In terms of electron transfer and oxidation number, how does the manganese change in this reaction?

The standard hydrogen electrode uses an electrode of platinum coated in a finely divided form of the metal called platinum black. What is the purpose of this coating?

Sn2+ + 2Fe3+ → Sn4+ + 2Fe2+

(ii) Calculate the e E ɵ cell = _______