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Factors Affecting Adsorption

3o2_____>2o3 ...

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3o2_____>2o3 is formed and enthalpy change is 286kj Find enthalpy change in formation of o3

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Q. The standard enthalpy of formation of

H_{2} O (l)

{F e}_{2} O_{3} (s)

are respectively

- 286

k J

{m o l}^{- 1}

- 824

k J

{m o l}^{- 1}

. What is the standard enthalpy change for the following reaction?

{F e}_{2} O_{3} (s) + 3 H_{2} (g) ⟶ 3 H_{2} O (l) + 2 F e (s)

Q. The enthalpy of formation of ammonia is

- 46.0 k J m o l^{- 1}

. The enthalpy change for the reaction.

2 N H_{3} (g) \to 2 N_{2} (g) + 3 H_{2} (g)

Q. The enthalpy change for a reaction

N_{2} (g) + 3 H_{2} (g) \to 2 N H_{3} (g)

is -92.2 kJ/mol. Calculate the enthalpy of formation of ammonia.

Q. Assertion :The enthalpy of formation of

H_{2} O (l)

is greater than that of

H_{2} O (g)

Reason: Enthalpy change is negative for the condensation reaction:

H_{2} O (g) ⟶ H_{2} O (l)

:

Q. Assertion :The enthalpy of formation of

H_{2} O (l)

is greater than that of

H_{2} O (g)

. Reason: Enthalpy change is negative for the condensation reaction

H_{2} O (g) ⟶ H_{2} O (l)

.

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