How is the presence of SO2 detected?

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asked Dec 23, 2017 in Chemistry by sforrest072 (157,439 points) 63 447 1246

How is the presence of SO2 detected?

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answered Dec 23, 2017 by mdsamim (213,225 points) 5 10 21
selected Dec 23, 2017 by sforrest072
 
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SO2 is a colourless and pungent smelling gas. It can be detected with the help of potassium permanganate solution. When SO2 is passed through an acidified potassium permanganate solution, it decolonizes the solution

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