The following data were obtained during the first order thermal decomposition of N2O5(g) at constant volume 2N2 O5(g) → 2N2O4(g) + O2(g) The rate constant is

Question

The following data were obtained during the first order thermal decomposition of N2O5(g) at constant volume 2N2 O5(g) → 2N2O4(g) + O2(g) <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/d0c0c212df3e20440c66616424ea6136-.jpeg" /> The rate constant is (A) 2 × 10-4 s-1  (B) 5 × 10-4 s-1  (C) 3 × 10-4 s-1  (D) 8 × 10-4 s-1

Tardigrade Admin · Accepted Answer

beginmatrix&2N2O5(g)&→&2N2O4(g)+&O2(g) t=0&0.5 atm&&& t=t&(0.5 - 2x)atm&&2x atm&x atm endmatrix pt=pN2O4 +Po2 x=Pt- 0.5 PN2O5=0.5 -2x 0.5 -2(Pt-0.5)=1.5-2Pt At t =100s;pt =0.512 atm PN2O5=1.5-2×0.512 =0.476 atm k=(2.303/t)log (Pi/PA) =(2.303/100s ) log( 0.5 atm/0.476 atm ) =(2.303/100s) ×0.0216 =4.98×10-4s-1

Q. The following data were obtained during the first order thermal decomposition of $N_{2} O_{5} (g)$ at constant volume
$2 N_{2} O_{5} (g) \to 2 N_{2} O_{4} (g) + O_{2} (g)$

The rate constant is

$2 \times 1 0^{- 4} s^{- 1}$

$5 \times 1 0^{- 4} s^{- 1}$

$3 \times 1 0^{- 4} s^{- 1}$

$8 \times 1 0^{- 4} s^{- 1}$

Q. The following data were obtained during the first order thermal decomposition of N2​O5​(g) at constant volume 2N2​O5​(g)→2N2​O4​(g)+O2​(g) The rate constant is

2×10−4s−1

5×10−4s−1

3×10−4s−1

8×10−4s−1

Q. The following data were obtained during the first order thermal decomposition of $N_{2} O_{5} (g)$ at constant volume
$2 N_{2} O_{5} (g) \to 2 N_{2} O_{4} (g) + O_{2} (g)$

The rate constant is

$2 \times 1 0^{- 4} s^{- 1}$

$5 \times 1 0^{- 4} s^{- 1}$

$3 \times 1 0^{- 4} s^{- 1}$

$8 \times 1 0^{- 4} s^{- 1}$