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Edexcel IGCSE Chemistry 4.16 acid rain

Practise acid-rain questions by linking sulfur impurities or nitrogen oxides to acidic rain and its environmental effects.

Syllabus
First assessment 2019
Course
Chemistry 4CH1

Exam points

  • Explain how sulfur impurities burn to form SO2, then dissolve in rainwater to make acid rain.
  • State environmental effects of acid rain, such as damage to plants, water or buildings.
  • Link oxides of nitrogen or sulfur dioxide in air to acid rain or respiratory problems.

4.16 Acid rain question 1

[Maximum number: 1]

This question is about octane (C8H18)\left(\mathrm{C}_{8} \mathrm{H}_{18}\right) which is produced in the gasoline fraction during fractional distillation of crude oil.

A car is driven at constant speed for 4.00 km .

The exhaust gases are collected and their volume at room temperature and pressure (rtp) is 5.02×105 cm35.02 \times 10^{5} \mathrm{~cm}^{3}.

The exhaust gases include carbon dioxide and oxides of nitrogen.
The carbon dioxide is removed from the exhaust gases. The volume of the remaining gases at rtp is 2.96×105 cm32.96 \times 10^{5} \mathrm{~cm}^{3}.

Give a reason why oxides of nitrogen should not be released into the atmosphere.

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