You visited us 1 times! Enjoying our articles? Unlock Full Access!

Byju's Answer

Standard XII

Chemistry

Anomalous Behaviour of Fluorine

25. Enthalpy ...

Question

25. Enthalpy of formation AB(g) from A2(g) and B2(g) is represented by delta H(AB) of formation in kJ/mol. Thus, electronegativity difference (delta X) between A and B is related with delta H of formation (AB) as

Open in App

Solution

Suggest Corrections

Similar questions

Q. For a reaction:

C_{(s)} + O_{2 (g)} \to C O_{2 (g)}

what is the relation between enthalpy of reaction (

Δ H_{r}

), enthalpy of formation of

C O_{2} (Δ H_{f}

) and enthalpy of combustion of carbon (

Δ H_{c o m b}

Q. Calculate

Δ H

for the reaction between ethene and water to form ethyl alcohol from the following data:

Δ_{c} H C_{2} H_{5} {O H}_{(I)} = - 1368 k J

Δ_{c} H C_{2} H_{4 (g)} = - 1410 k J

Does the calculated

{Δ H}^{0}

represent the enthalpy of formation of liquid ethanol?

I

. The enthalpy of formation (

Δ H_{f}

) of

{B r}_{2} (g)

1.00 a t m

and

298 K

0 k J / m o l

I I

. The

Δ H_{f}

0

for elements in their standard state.

Q. The standard enthalpy of formation of

N H_{3}

46.0

kJ/mol. If the enthalpy of formation of

H_{2}

from its atoms is

- 436

kJ/mol and that of

N_{2}

- 712

kJ/mol, the average bond enthalpy of

N - H

bond in

N H_{3}

is:

The standard enthalpy of formation of $N H_{3}$ is $46.0 k J m o l^{- 1}$ . If the enthalpy of formation of $H_{2}$ from its atom is $- 436 k J m o l^{- 1}$ and that of $N_{2}$ is $- 712 k J m o l^{- 1}$ , the average bond enthalpy of $N - H$ bond in $N H_{3}$ is

Join BYJU'S Learning Program