CIE Jun 2017 v2 Paper 2 Q2

Answers available below

PMT Nitrogen gas, N2, is very unreactive. (a) Explain why nitrogen gas is so unreactive.[2] (b) Despite the low reactivity of N2, oxides of nitrogen occur in the atmosphere through both natural and man-made processes. (i) Explain why oxides of nitrogen can be produced by internal combustion engines.[2] (ii) State and explain, using a suitable equation, how oxides of nitrogen produced by internal combustion engines can be prevented from reaching the atmosphere.[2] (iii) State the role of nitrogen dioxide, NO2, in the formation of acid rain by oxides of sulfur. Write suitable equations to explain this role. roleequation 1equation 2[3] (iv) Suggest an equation to show how NO2 can contribute directly to acid rain.[1] (c) Explain how the uncontrolled use of nitrate fertilisers on land can lead to a severe reduction in water quality in rivers.[3]UCLES 2017 9701/22/M/J/17 [Total: 13] [Turn over<br />

Show answer