(Δ H-Δ U) for the formation of carbon monoxide (CO) from its elements at 298 K is (R=8.314 JK -1 mol -1)

Question

(Δ H-Δ U) for the formation of carbon monoxide (CO) from its elements at 298 K is (R=8.314 JK -1 mol -1) (A) -1238.78 J mol -1 (B) 1238.78 J mol -1 (C) -2477.57 J mol -1 (D) 2477.57 J mol -1

Tardigrade Admin · Accepted Answer

C(s)+(1/2) O 2(g) longrightarrow CO (s)(Δ H-Δ U)=-Δ n R T =-(1/2) × 8.314 × 298=-1238.78

Q. $(Δ H - Δ U)$ for the formation of carbon monoxide (CO) from its elements at $298 K$ is $(R = 8.314 J K^{- 1} m o l^{- 1})$

$- 1238.78 J m o l^{- 1}$

$1238.78 J m o l^{- 1}$

$- 2477.57 J m o l^{- 1}$

$2477.57 J m o l^{- 1}$

$C_{(s)} + \frac{1}{2} O_{2 (g)} ⟶ C O_{(s)} (Δ H - Δ U) = - Δ n RT$
$= - \frac{1}{2} \times 8.314 \times 298 = - 1238.78$

Q. (ΔH−ΔU) for the formation of carbon monoxide (CO) from its elements at 298K is (R=8.314JK−1mol−1)

−1238.78Jmol−1

1238.78Jmol−1

−2477.57Jmol−1

2477.57Jmol−1