The enthalpy change for a reaction does not d | vedclass

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

Question

(A) According to $Hess's \ Law$ of constant heat summation,the total enthalpy change for a chemical reaction is the same,whether the reaction takes pl

Vedclass · Accepted Answer

The nature of the intermediate reaction steps.

Vedclass · Answer

(A) According to $Hess's \ Law$ of constant heat summation,the total enthalpy change for a chemical reaction is the same,whether the reaction takes place in one step or in several steps. Therefore,the enthalpy change depends only on the initial and final states of the system and is independent of the path taken or the nature of the intermediate reaction steps. However,it does depend on the physical states of the reactants and products,the temperature,and the specific reactants used to form the products.

The enthalpy change for a reaction does not depend on:

Similar Questions

One mole of acetone requires less heat to vaporise than $1$ mol of water. Which of the two liquids has higher enthalpy of vaporisation?

The enthalpy of atomization of $PH_3(g)$ is $228 \, kcal \, mol^{-1}$ and that of $P_2H_4(g)$ is $355 \, kcal \, mol^{-1}$. The $P-P$ bond energy (in $kcal \, mol^{-1}$) is:

The enthalpies of formation of $Al_{2}O_{3}$ and $Cr_{2}O_{3}$ are $-1596 \ kJ$ and $-1134 \ kJ$ respectively. $\Delta H$ for the reaction $2Al + Cr_{2}O_{3} \to 2Cr + Al_{2}O_{3}$ is.......$kJ$

The following thermochemical reactions are given:
$M + \frac{1}{2} O_2 \to MO + 351.4 \ kJ$ $(i)$
$X + \frac{1}{2} O_2 \to XO + 90.8 \ kJ$ $(ii)$
It follows that the heat of reaction for the following process $M + XO \rightleftharpoons MO + X$ is given by $... \ kJ$.

Calculate the enthalpy change for the reaction $H_{2(g)} + Br_{2(g)} \rightarrow 2HBr_{(g)}$ in $kJ$. The bond energies of $H-H$,$Br-Br$,and $H-Br$ are $435$,$192$,and $364 \, kJ \, mol^{-1}$ respectively.

Vedclass Test Series

Exam Paper Generator

Online Exam Module