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Question
In the reaction \[\ce{2SO2 + O2 -> 2SO3}\] the rate of appearance of SO3 is 4 × 10−4 M/s, the rate of disappearance of O2 is ____________.
Options
1.0 × 10−4 M/s
4.0 × 10−4 M/s
2.0 × 10−4 M/s
6.0 × 10−4 M/s
MCQ
Fill in the Blanks
Solution
In the reaction \[\ce{2SO2 + O2 -> 2SO3}\] the rate of appearance of SO3 is 4 × 10−4 M/s, the rate of disappearance of O2 is 2.0 × 10−4 M/s.
Explanation:
\[\ce{2SO2 + O2 -> 2SO3}\]
Rate of appearance of SO3 = `("d"["SO"_3])/"dt"` = 4 × 10−3 M/s
`-1/2 ("d"["SO"_2])/"dt" = (-"d"["O"_2])/"dt" = 1/2 ("d"["SO"_3])/"dt"`
`(-"d"["O"_2])/"dt" = 1/2 xx 4 xx 10^-4`
= 2.0 × 10−4 M/s
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