Electrochemical Cells

Question 1

Explain function of a salt bridge (2)

Answer 1

The ions in the ionic substance in the salt bridge move through the salt bridge

To maintain charge balance / complete the circuit

Question 2

There are two ways to use hydrogen as fuel for cars. One way is in a fuel cell to power and electric motor, the other is a fuel in internal combustion

Suggest an advantage of using the fuel cells

Answer 2

A fuel cell converts more of the available energy from combustion of hydrogen into kinetic energy of the car / an internal combustion engine wastes more (heat) energy