What is the value of Delta H - Delta U for th | vedclass

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

Question

(C) The balanced chemical equation for the formation of $2$ moles of ammonia is: $N_{2(g)} + 3 H_{2(g)} \longrightarrow 2 NH_{3(g)}$ We know the relat

Vedclass · Accepted Answer

$-2 RT$

Vedclass · Answer

(C) The balanced chemical equation for the formation of $2$ moles of ammonia is: $N_{2(g)} + 3 H_{2(g)} \longrightarrow 2 NH_{3(g)}$ We know the relation $\Delta H - \Delta U = \Delta n_g RT$. Here,$\Delta n_g$ is the change in the number of moles of gaseous species: $\Delta n_g = (	ext{Sum of stoichiometric coefficients of gaseous products}) - (	ext{Sum of stoichiometric coefficients of gaseous reactants})$ $\Delta n_g = 2 - (1 + 3) = 2 - 4 = -2$. Substituting the value of $\Delta n_g$ in the relation: $\Delta H - \Delta U = -2 RT$.

What is the value of $\Delta H - \Delta U$ for the formation of $2$ moles of ammonia from $H_{2(g)}$ and $N_{2(g)}$?

Similar Questions

Which of the following statements is true regarding the universe according to the laws of thermodynamics?

An ideal gas absorbs $210 \ J$ of heat and undergoes expansion from $3 \ L$ to $6 \ L$ against a constant external pressure of $10^5 \ Pa$. What is the value of $\Delta U$ (in $J$)?

If $2 \ kJ$ of heat is released from the system and $6 \ kJ$ of work is done on the system,what is the internal energy change $(\Delta U)$ of the system?

Internal energy of an ideal gas increases in:

For the reaction $CH_3COOH_{(l)} + 2O_{2(g)} \rightleftharpoons 2CO_{2(g)} + 2H_2O_{(l)}$ at $25\,^{\circ}C$ and $1\,atm$ pressure,$\Delta H = -874\,kJ.$ Then the change in internal energy $(\Delta E)$ is $...\,kJ$

Vedclass Test Series

Exam Paper Generator

Online Exam Module