Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction: 2no2 → 2no + o2 in a particular experiment at 300 °c, [no 2 ] drops from 0.0100 to 0.00650 m in 100 s. the rate of disappearance of no2 for this period is m/s.

The rate of disappearance of is

Explanation:

The given chemical reaction is:

The rate of the reaction for disappearance of is given as:

Or,

where,

= final concentration of = 0.00650 M

= initial concentration of = 0.0100 M

= final time = 100 minutes

= initial time = 0 minutes

Putting values in above equation, we get:

Hence, the rate of disappearance of is

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it is b that is the answer.