The Reaction NO₂ (G) +CO(g) $\degree$ NO(g) + CO₂(g) Appears to Be Second Order in NO

question 155

Essay

The reaction NO₂ (g) +CO(g) $\degree$ NO(g) + CO₂(g) appears to be second order in NO and zero order in CO, with a rate constant at 488 K of 0.749 M-1s-1.Suppose the initial partial pressure of NO₂ in a reaction vessel containing air at STP 1atm, 273 K) is 0.0278 atm.How many moles of NO₂ are present per liter after 2.50 minutes?