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2SO2+O2 to 2SO3 represents an importan...

`2SO_2+O_2 to 2SO_3`
represents an important stage in the Industrial Preparation of Sulphuric acid.
How do the following changes influence the forward reaction ?
i) More oxygen ( `O_2` ) is added.
ii) Pressure is decreased.

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The correct Answer is:
i) Speed of forward reaction iincreases. Ii) Speed of forward reaction decreases
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