The rate constant of the reaction 2N2O5 arrow 4NO2 + O2 at 300 K is 3 × 10-5 s-1. If the rate of the reaction at the same temperature is 2.4 × 10-5 mol dm-3 s-1, then the molar concentration of N2O5 is

Question

The rate constant of the reaction 2N2O5 arrow 4NO2 + O2 at 300 K is 3 × 10-5 s-1. If the rate of the reaction at the same temperature is 2.4 × 10-5 mol dm-3 s-1, then the molar concentration of N2O5 is (A) 0.4 M (B) 0.8 M (C) 0.04 M (D) 0.008 M

Tardigrade Admin · Accepted Answer

Given, k( rate constant )=3 × 10-5 s -1 which indicates that reaction is of first order. (: ⋅. unit is .s-1) ∴ r (rate ofreaction) =k [concentration] 1 ∴ [ concentration ]=(r/k) [ concentration ]=(2.4 × 10-5/3.0 × 10-5)=0.8 M

Q. The rate constant of the reaction $2 N_{2} O_{5} \to 4 N O_{2} + O_{2}$ at $300 K$ is $3 \times 1 0^{- 5} s^{- 1}$ . If the rate of the reaction at the same temperature is $2.4 \times 1 0^{- 5} m o l d m^{- 3} s^{- 1}$ , then the molar concentration of $N_{2} O_{5}$ is

0.4 M

0.8 M

0.04 M

0.008 M

0.08 M

Q. The rate constant of the reaction 2N2​O5​→4NO2​+O2​ at 300K is 3×10−5s−1. If the rate of the reaction at the same temperature is 2.4×10−5moldm−3s−1, then the molar concentration of N2​O5​ is