A-level Chemistry Chapter 20 - Electrode potentials

What are the features of a standard hydrogen electrode?

• I and II
• I and III
• II and III
• I, II and III

What conditions are necessary to directly measure a standard electrode potential (E^o)?

• I and II
• I and III
• II and III
• I, II and III

Calculate the cell potential of voltaic cell

• –1.51
• - 0.03
• +0.03
• +1.51

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-5

Voltaic cell is made by connecting two half-cells below. Which statement is correct?

• Mn is oxidized and voltage is 1.06 V
• Pb is oxidized and voltage is 1.06 V
• Mn is oxidized and voltage is 1.32 V
• Pb is oxidized and voltage is 1.32 V

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NGSS.HS-PS1-2

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Calculate the cell potential of voltaic cell

• –1.60 V
• +1.60 V
• –3.12 V
• +3.12 V

Tags

NGSS.HS-PS3-1

Which represents reduction process occurring in standard hydrogen electrode?

• H_2(g) → 2H⁺_(aq) + 2e^–
• H⁺_(aq) + OH^–_(aq) → H₂O_(l)
• 2H⁺_(aq) + 2e^– → H_2(g)
• O_2(g) + 4H⁺_(aq) + 4e– → 2H₂O_(l)

Tags

NGSS.HS-PS1-7

Which statement is correct about value of E^ο?

• more positive value E^ο, greater driving force for reduction
• more negative value E^ο, greater driving force for reduction
• more positive value E^ο, greater the rate of reaction
• more negative value E^ο, greater the rate of reaction

Tags

NGSS.HS-PS2-5

Calculate the cell potential of voltaic cell

• + 0.01
• + 0.89
• + 1.77
• + 2.65

Tags

NGSS.HS-PS3-1

What is the equation and cell potential?

• 2Al³⁺ + 3Ni → 2Al + 3Ni²⁺ E^O = 1.89 V
• 2Al + 3Ni²⁺ → 2Al³⁺ + 3Ni E^O = 1.89 V
• 2Al³⁺ + 3Ni → 2Al + 3Ni²⁺ E^O = 1.43 V
• 2Al + 3Ni²⁺ → 2Al³⁺ + 3Ni E^O = 1.43 V

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-4

What happen when zinc is added to magnesium chloride?

• No reaction will take place
• Chlorine gas will be produced
• Magnesium metal will form
• Zinc chloride will form

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2