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(ii) When shale gas is burned, the hydrogen sulfide reacts with oxygen.
2H2S + 3022SO2 + 2H2O
Explain how the combustion of shale gas can lead to the formation of acid rain.

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Explanation:

Now , we have the equation of the reaction as;

2H2S(g) + 302(g)------->2SO2(g) + 2H2O(g)

This equation shows that SO2 gas is produced in the process. Let us recall that this same SO2 gas is the anhydride of H2SO4. This means that it can dissolve in water to form H2SO4

So, when SO2 dissolve in rain droplets, then H2SO4 is formed thereby lowering the pH of rain water. This is acid rain.

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