Final answer:
The killer fog in London was ultimately the result of burning coal, which produced industrial smog or London-type smog. This smog was caused by the emissions of soot, fly ash, sulfur dioxide, sodium chloride, and calcium sulfate particles from the burning of coal. The sulfur dioxide could react with atmospheric hydroxide to produce sulfuric acid, leading to acid rain.
Step-by-step explanation:
The killer fog in London was ultimately the result of burning large amounts of high sulfur coal. This type of air pollution, known as industrial smog or London-type smog, was caused by the emissions of soot, fly ash, sulfur dioxide, sodium chloride, and calcium sulfate particles from the burning of coal. The sulfur dioxide in the smog could react with atmospheric hydroxide to produce sulfuric acid, which would precipitate as acid rain. The burning of coal has also been associated with the production of greenhouse gases and the formation of acid rain in other parts of the world.