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The rate of formation of SO(3) in the re...

The rate of formation of `SO_(3)` in the reaction
`2SO_(2)+O_(2) rarr 2SO_(3)`
is 100 g `"min"^(-1)` Hence rate of disappearance of `O_(2)` is

A

50 g `"min"^(-1)`

B

100 g `"min"^(-1)`

C

20 g `"min"^(-1)`

D

40 g `"min"^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
Molar mass of `SO_(3)=(32+16xx3)g mol^(-1)`
`= 80 g mol^(-1)`
`therefore` Rate of formation of `SO_(3)=100 "g min"^(-1)`
`=(100)/(80)"mol min"^(-1)`
Rate of disappearance of `O_(2)`
`=(1)/(2)xx` Rate of formation of `SO_(3)`
`=(100)/(80xx2)"mol min"^(-1)`
Molar mass of `O_(2)=32`
`therefore (100)/(80xx2)"mol min"^(-1)=(100xx32)/(80xx2)"g min"^(-1)`
`= 20"g min"^(-1)`
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