A mixture of 2 mole of CO and 1 mol of O 2 is ignited. Correct relationship is

Question

A mixture of 2 mole of CO and 1 mol of O 2 is ignited. Correct relationship is (A) Δ H =Δ U (B) Δ H >Δ U (C) Δ H <Δ U (D) The relationship depends upon the capacity of vessel

Tardigrade Admin · Accepted Answer

2 CO ( g )+ O 2( g ) longrightarrow 2 CO 2( g ) Δ n 9=2-3=-1 We know, Δ H=Δ U+Δ ng R T Δ H=Δ U-1 × R T ⇒ Δ H=Δ U-R T ⇒ Δ H < Δ U [8 = 10 - 2 ⇒ 8 < 10]

Q. A mixture of $2$ mole of $CO$ and $1 m o l$ of $O_{2}$ is ignited. Correct relationship is

$Δ H = Δ U$

$Δ H > Δ U$

$Δ H < Δ U$

The relationship depends upon the capacity of vessel

$2 CO (g) + O_{2} (g) ⟶ 2 C O_{2} (g)$
$Δ n_{9} = 2 - 3 = - 1$
We know,
$Δ H = Δ U + Δ n_{g} RT$
$Δ H = Δ U - 1 \times RT$
$\Rightarrow Δ H = Δ U - RT$
$\Rightarrow Δ H < Δ U$
$[8 = 10 - 2 \Rightarrow 8 < 10]$

Q. A mixture of 2 mole of CO and 1mol of O2​ is ignited. Correct relationship is

ΔH=ΔU

ΔH>ΔU

ΔH<ΔU