Electrode Potential

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

Tags

NGSS.HS-PS1-2

Galvanic cell converts

• Chemical energy into electrical energy

• Electrical energy into chemical energy

• a metal from its elemental form to combined form

• Electrolyte into individual ions

Nernst equation for an electrode is based on the variation of electrode potential of an electrode with

• Temperature

• Concentration of electrolyte

• Both a & b

• Density of the electrodes

What reaction occurs at the anode?

Ag⁺/Ag = 0.80V

Ni²⁺/Ni = -0.25V

• Ag⁺ + e^- →Ag

• Ag → Ag⁺ + e^-

• Ni²⁺ + 2e^- → Ni

• Ni → Ni²⁺ + 2e^-

Tags

NGSS.HS-PS1-2

An oxidizing agent will

• increase in mass

• lose electrons

• be reduced

• increase in oxidation number

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

As an element is oxidized, its oxidation number

• decreases as electrons are lost

• increases as electrons are lost

• decreases as electrons are gained

• increases as electrons are gained

Tags

NGSS.HS-PS1-2

In the following reaction

Sn⁺² + 2Fe⁺³ → Sn⁺⁴ + 2Fe⁺²

the oxidizing agent is....

• Sn⁺⁴

• Sn⁺²

• Fe⁺³

• Fe⁺²

Tags

NGSS.HS-PS1-2