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Use the given...

Question

Use the given standard enthalpies of formation to determine the heat of reaction of the following reactions:
$T i C l_{4} (g) + 2 H_{2} O (g) \to T i O_{2} (g) + 4 H C l (G)$
$△ H_{f}^{\circ} T i C l_{4} (g) = - 736.2 k J / m o l e △ H_{f}^{\circ} T i O_{2} (g) = - 944.7 k J / m o l e$
$△ H_{f}^{\circ} H_{2} O (g) = - 241.8 k J / m o l e △ H_{f}^{\circ} H C l (g) = - 92.3 k J / m o l e$ .

A

- 278.1

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B

+ 369.2

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C

+ 67.1

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D

- 67.1

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Solution

The correct option is A $- 278.1$
A
−278.1
B
+369.2
C
+67.1
D
−67.1

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Q. Use the given standard enthalpies of formation to determine the heat of reaction of the following reaction:

T i C L_{4} (g) + 2 H_{2} O (g) \to T i O_{2} (g) + 4 H C l (g)

Δ H_{f}^{\circ} T i C L_{4} (g) = - 763.2 k J / m o l

Δ H_{f}^{\circ} T i O_{2} (g) = - 944.7 k J / m o l

Δ H_{f}^{\circ} H_{2} O (g) = - 241.8 k J / m o l

Δ H_{f}^{\circ} H C l (g) = - 92.3 k J / m o l

Q. Use the given standard enthalpies of formation to determine the heat of reaction of the following reaction:

C_{2} H_{5} O H (l) + 3 O_{2} (g) ⟶ 2 C O_{2} (g) + 3 H_{2} O (g)

Δ H_{f} C_{2} H_{5} O H (l) = - 277.7 k J / m o l e

Δ H_{f} C O_{2} (g) = - 393.5 k J / m o l e

Δ H_{f} H_{2} O (g) = - 241.8 k J / m o l e

Q. Use the given standard enthalpies of formation to determine the heat of reaction of the following reaction:

2 L i O H + C O_{2} (g) ⟶ {L i}_{2} C O_{3} (s) + H_{2} O (l)

Δ H_{f} L i O H (s) = - 487.23 k J / m o l e

Δ H_{f} {L i}_{2} C O_{3} (s) = - 1215.6 k J / m o l e

Δ H_{f} H_{2} O (l) = - 285.85 k J / m o l e

Δ H_{f} C O_{2} (g) = - 393.5 k J / m o l e

Q. Calculate the standard enthalpy change and standard internal energy change for the following reaction at 300K :

O F_{2} (g) + H_{2} O (g) \to O_{2} (g) + 2 H F (g)

Given that the standard enthalpy of formation of

O F_{2}

H_{2} O

H F

23 k j m o l^{- 1}

- 241.8 k j m o l^{- 1}

- 268.6 k j m o l^{- 1}

Q. The standard enthalpies of formation at

300 K

C C l_{4} (l), H_{2} O (g), C O_{2} (g)

H C l (g)

- 107, - 242, - 394

- 93 {kJ mol}^{- 1}

respectively. The value of

Δ U

for the following reaction at

300 K

C C l_{4} (l) + 2 H_{2} O (g) \to C O_{2} (g) + 4 H C l (g)

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