Given that:(i) Delta_f H^o of N_2O is 82 kJ | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The reaction for the formation of $N_2O$ is: $N_{2(g)}   \frac{1}{2} O_{2(g)} 	o N_2O_{(g)}$.The theoretical enthalpy of formation $(\Delta H_{ca

Vedclass · Accepted Answer

$-88$

Vedclass · Answer

(A) The reaction for the formation of $N_2O$ is: $N_{2(g)}   \frac{1}{2} O_{2(g)} 	o N_2O_{(g)}$.The theoretical enthalpy of formation $(\Delta H_{calc})$ using bond energies is calculated as:$\Delta H_{calc} = [	ext{Energy required to break bonds}] - [	ext{Energy released in forming bonds}]$$\Delta H_{calc} = (BE_{N \equiv N}   \frac{1}{2} BE_{O = O}) - (BE_{N = N}   BE_{N = O})$$\Delta H_{calc} = (946   \frac{1}{2} 	imes 498) - (418   607) = (946   249) - 1025 = 1195 - 1025 = 170 \ kJ \ mol^{-1}$.Resonance energy is defined as the difference between the experimental enthalpy of formation and the theoretical enthalpy of formation:$	ext{Resonance Energy} = \Delta H_{calc} - \Delta H_{exp} = 170 - 82 = 88 \ kJ \ mol^{-1}$.Note: The resonance energy is typically expressed as a negative value representing stability,so the answer is $-88 \ kJ \ mol^{-1}$.

Given that:
$(i) \Delta_f H^o$ of $N_2O$ is $82 \ kJ \ mol^{-1}$
$(ii)$ Bond energies of $N \equiv N, N = N, O = O$ and $N = O$ are $946, 418, 498$ and $607 \ kJ \ mol^{-1}$ respectively.
The resonance energy of $N_2O$ is $...... \ kJ \ mol^{-1}$.

Similar Questions

The correct order of increasing $C - O$ bond length of $CO, CO_3^{2-}, CO_2$ is

$H_3PO_3$ can be represented by structures $(1)$ and $(2)$ shown below. Can these two structures be taken as the canonical forms of the resonance hybrid representing $H_3PO_3$? If not,give reasons for the same.

Write resonance structures of $CH_{3}COO^{-}$ and show the movement of electrons by curved arrows.

Write the resonance structures of $CH_2=CH-CHO$. Indicate the relative stability of the contributing structures.

Which of the following are not resonance structures of each other?

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Given that:$(i) \Delta_f H^o$ of $N_2O$ is $82 \ kJ \ mol^{-1}$$(ii)$ Bond energies of $N \equiv N, N = N, O = O$ and $N = O$ are $946, 418, 498$ and $607 \ kJ \ mol^{-1}$ respectively.The resonance energy of $N_2O$ is $...... \ kJ \ mol^{-1}$.