Electrode potentials

Last updated over 1 year ago

10 questions

Electrode potentials

Last updated over 1 year ago

10 questions

Question 1

a

b

c

Question 2

(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

Question 3

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 ____________ 

Other Answer Choices:

ions

circuit

Question 4

Question 5

ionic equation

EoCell = _______ (sign) _______ (value) V

Colour change = _______ to _______

Question 6

Sn2+ + 2Fe3+ → Sn4+ + 2Fe2+

(ii) Calculate the e E ɵ cell = _______

Question 7

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?

a

b

c

d

Question 8

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?

A) To increase the rate of the equilibrium between the hydrogen gas and the hydrogen ions

B) To provide an inert protective coating for the electrode

C) To increase the electrical conductivity of the electrode

D) To ensure that the conditions remain standard

Question 9

	a	b	c	d
3a)
3b)

Question 10

10.

a

b

c

d

Question 1

a

b

c

Question 2

(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

Question 3

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 ____________ 

Other Answer Choices:

ions

circuit

Question 4

Question 5

ionic equation

EoCell = _______ (sign) _______ (value) V

Colour change = _______ to _______

Question 6

Sn2+ + 2Fe3+ → Sn4+ + 2Fe2+

(ii) Calculate the e E ɵ cell = _______

Question 7

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?

a

b

c

d

Question 8

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?

A) To increase the rate of the equilibrium between the hydrogen gas and the hydrogen ions

B) To provide an inert protective coating for the electrode

C) To increase the electrical conductivity of the electrode

D) To ensure that the conditions remain standard

Question 9

	a	b	c	d
3a)
3b)

Question 10

10.

a

b

c

d

Electrode potentials

Electrode potentials

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 = _______

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 = _______

Sn2+ + 2Fe3+ → Sn4+ + 2Fe2+

(ii) Calculate the e E ɵ cell = _______