If C(s) +O2(g) → CO2(g), Δ H= -X CO(g) +(1/2) O2(g) → CO2(g), Δ H = -Y Calculate ΔtH for CO(g) formation

Question

If C(s) +O2(g) → CO2(g), Δ H= -X CO(g) +(1/2) O2(g) → CO2(g), Δ H = -Y Calculate ΔtH for CO(g) formation (A) - Y - X (B) Y - X (C) X + Y (D) X - Y

Tardigrade Admin · Accepted Answer

C (S)+ O 2(g) → CO 2(g) ; Δ H1=-x ldots( i ) CO (g)+(1/2) O 2(g) → CO 2(g) ; Δ H2=-y ldots(ii) For the formation of CO subtract Eqs. (ii) from (i), i.e. C(s)+O2(g) → CO2(g) underset(-)CO(g)+(1/2) underset(-)O2(g) → underset(-)CO2(g) C(s) +(1/2)O2(g) → CO(g) ∴ ΔrH for formation of CO=Δ H1-Δ H2 =-x+y or y-x

Q. If $C (s) + O_{2} (g) \to C O_{2} (g), Δ H = - X$
$CO (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g), Δ H = - Y$
Calculate $Δ_{t} H$ for $C O_{(g)}$ formation

$- Y - X$

$Y - X$

$X + Y$

$X - Y$

Q. If C(s)+O2​(g)→CO2​(g),ΔH=−X CO(g)+21​O2​(g)→CO2​(g),ΔH=−Y Calculate Δt​H for CO(g)​ formation

−Y−X

Y−X

X+Y

X−Y

Q. If $C (s) + O_{2} (g) \to C O_{2} (g), Δ H = - X$
$CO (g) + \frac{1}{2} O_{2} (g) \to C O_{2} (g), Δ H = - Y$
Calculate $Δ_{t} H$ for $C O_{(g)}$ formation

$- Y - X$

$Y - X$

$X + Y$

$X - Y$