Which of the following relationships is not correct?

Question

Which of the following relationships is not correct? (A) Δ H = Δ U+Δ ngRT (B) Δ Hsub = Δ Hfusion + Δ Hvap (C) Δ H°r = Sigma H°f(reactants) - Sigma H°f(products) (D) Δ H°r = Sigma B.E. of reactants - Sigma B.E of products

Tardigrade Admin · Accepted Answer

Correct answer is (c) Δ H°r = Sigma H°f(reactants) - Sigma H°f(products)

Q. Which of the following relationships is not correct?

$Δ H = Δ U + Δ n_{g} RT$

$Δ H_{s u b} = Δ H_{f u s i o n} + Δ H_{v a p}$

$Δ H_{r}^{\circ} = Σ H_{f (re a c t an t s)}^{\circ} - Σ H_{f (p ro d u c t s)}^{\circ}$

$Δ H_{r}^{\circ} = Σ B . E .$ of reactants $- Σ B . E$ of products

Correct answer is (c) $Δ H_{r}^{\circ} = Σ H_{f (re a c t an t s)}^{\circ} - Σ H_{f (p ro d u c t s)}^{\circ}$

Q. Which of the following relationships is not correct?

ΔH=ΔU+Δng​RT

ΔHsub​=ΔHfusion​+ΔHvap​

ΔHr∘​=ΣHf(reactants)∘​−ΣHf(products)∘​

ΔHr∘​=ΣB.E. of reactants −ΣB.E of products

Correct answer is (c) ΔHr∘​=ΣHf(reactants)∘​−ΣHf(products)∘​

$Δ H = Δ U + Δ n_{g} RT$

$Δ H_{s u b} = Δ H_{f u s i o n} + Δ H_{v a p}$

$Δ H_{r}^{\circ} = Σ H_{f (re a c t an t s)}^{\circ} - Σ H_{f (p ro d u c t s)}^{\circ}$

$Δ H_{r}^{\circ} = Σ B . E .$ of reactants $- Σ B . E$ of products

Correct answer is (c) $Δ H_{r}^{\circ} = Σ H_{f (re a c t an t s)}^{\circ} - Σ H_{f (p ro d u c t s)}^{\circ}$