A delivery company wants to replace its diesel vans.
The company is choosing between hydrogen–oxygen fuel cell vans and battery electric vans. Each van travels about 400 km each day.
The table shows information about the two types of van.
| Type of van | Range on a full tank or full charge (km) | Time to refuel or fully recharge (min) | Mass of fuel cell and hydrogen tank, or of battery (kg) | Number of hydrogen stations or fast chargers within 50 km of the depot |
|---|---|---|---|---|
| hydrogen fuel cell | 500 | 5 | 350 | 1 |
| battery electric | 300 | 90 | 700 | 40 |
Write the balanced symbol equation for the overall reaction in a hydrogen–oxygen fuel cell.
The battery in a battery electric van must be recharged when it runs down. A fuel cell does not run down in this way.
Explain the difference between a chemical cell and a fuel cell in terms of the reactants.
Evaluate the use of hydrogen fuel cell vans and battery electric vans for this company.
Use the information in the table and your own knowledge.
63 exam-style questions on OCR GCSE Chemistry 6.2 Organic chemistry, covering 6.2.1 Crude oil and fractional distillation, 6.2.2 Cracking and dependence on hydrocarbons, 6.2.3 Functional groups and homologous series, 6.2.4 Reactions of alkanes, alkenes and alcohols, 6.2.5 Addition polymerisation and repeat units, 6.2.6 Naturally occurring polymers, 6.2.7 Chemical cells and fuel cells, and 6.2.8 Condensation polymerisation and how to make one. Each one has a worked solution and a mark scheme showing where the marks go.