Two are true, one is not

Exercise and reference answers

Questions

1. False statement

   A galvanic cell needs an external power supply

   Statements

   1. A galvanic cell runs a spontaneous reaction
   2. An electrolytic cell consumes electrical energy
   3. A galvanic cell needs an external power supply

2. False statement

   Molar conductivity decreases with dilution

   Statements

   1. Molar conductivity decreases with dilution
   2. Conductivity decreases with dilution
   3. Molar conductivity increases with dilution

3. False statement

   Electrode potentials are absolute, not relative

   Statements

   1. E°(cell) = E°(cathode) − E°(anode)
   2. Electrode potentials are absolute, not relative
   3. The hydrogen electrode is the zero of the scale

Explanation