how do i solve the following problem?
Nitrogen dioxide decomposes to nitric oxide and oxygen via the reaction:
2NO2 → 2NO + O2
In a particular experiment at 300°C, [NO2] drops from 0.0100 to 0.00650 M in 100 s. The rate of
Disappearance of NO2 for this period is __________ M/s.
the answer is 3.5
To find the rate of disappearance of NO2, we need to determine the change in concentration of NO2 and divide it by the change in time.
Given information:
- Initial concentration of NO2 ([NO2]0) = 0.0100 M
- Final concentration of NO2 ([NO2]f) = 0.00650 M
- Change in time (Δt) = 100 s
1. Calculate the change in concentration of NO2:
Δ[NO2] = [NO2]f - [NO2]0
Δ[NO2] = 0.00650 M - 0.0100 M
Δ[NO2] = -0.00350 M
Note: The negative sign indicates a decrease in concentration.
2. Calculate the rate of disappearance of NO2:
Rate = Δ[NO2] / Δt
Rate = -0.00350 M / 100 s
Therefore, the rate of disappearance of NO2 for this period is -0.000035 M/s.