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9.1 Fuels

9.1 Fuels

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Question 15

Passenger ferries are used to transport commuters across a busy city harbor.

The exhaust emissions from three different commuter ferries with similar passenger capacities were monitored:

  • Ferry P: An older diesel ferry running on marine gas oil (MGO) with no exhaust treatment.
  • Ferry Q: A modern diesel ferry running on marine gas oil (MGO) fitted with selective catalytic reduction (SCR) and a wet scrubber.
  • Ferry R: A modern ferry running on Liquefied Natural Gas (LNG).

Using the data in the table below and your own chemical knowledge, discuss and compare the environmental and health impacts of the emissions from these three ferries.

FerrySulfur dioxide (g/km\text{g/km}g/km)Nitrogen oxides (g/km\text{g/km}g/km)Carbon dioxide (g/km\text{g/km}g/km)Particulates (g/km\text{g/km}g/km)
Ferry P (Older diesel, untreated)1.4012.5034000.42
Ferry Q (Modern diesel, SCR & scrubber)0.152.1034000.05
Ferry R (Modern LNG)0.003.8026000.01
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Markscheme

9.1 Fuels Questions

  1. GCSE
  2. /Chemistry
  3. /9.1 Fuels

130 exam-style questions on Edexcel GCSE Chemistry 9.1 Fuels, covering 9.1.1 Hydrocarbons and crude oil, 9.1.2 Fractional distillation of crude oil and its fractions, 9.1.3 The alkanes as a homologous series, 9.1.4 Complete and incomplete combustion, 9.1.5 Pollutants from burning fuels, 9.1.6 Hydrogen as a fuel and non-renewable fossil fuels, and 9.1.7 Cracking of larger alkanes. Each one has a worked solution and a mark scheme showing where the marks go.

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