For which of the following reactions,Delta H | vedclass

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

Question

(B) The relationship between enthalpy change $(\Delta H)$ and internal energy change $(\Delta U)$ is given by the equation: $\Delta H = \Delta U   \De

Vedclass · Accepted Answer

$2HI_{(g)} 	o H_{2(g)} + I_{2(g)}$

Vedclass · Answer

(B) The relationship between enthalpy change $(\Delta H)$ and internal energy change $(\Delta U)$ is given by the equation: $\Delta H = \Delta U   \Delta n_g RT$.For $\Delta H$ to be equal to $\Delta U$,the term $\Delta n_g$ must be $0$.$\Delta n_g$ is the difference between the sum of stoichiometric coefficients of gaseous products and gaseous reactants.For option $B$: $2HI_{(g)} 	o H_{2(g)}   I_{2(g)}$,$\Delta n_g = (1   1) - 2 = 0$.Since $\Delta n_g = 0$,$\Delta H = \Delta U   0$,which means $\Delta H = \Delta U$.

For which of the following reactions,$\Delta H$ is equal to $\Delta U$ ?

Similar Questions

Identify the process having $\Delta V = 0$.

When an ideal gas expands isothermally from $5 \ m^3$ to $10 \ m^3$ at $25 \ ^{\circ}C$ against a constant pressure of $10^7 \ N \cdot m^{-2}$,then the work done on the gas is (in $MJ$)

Which one of the following is an extensive property?

An ideal gas is allowed to expand from $2 \ dm^3$ to $6 \times 10^{-3} \ m^3$ against a constant external pressure of $1 \ bar$. The work done in $kJ$ is (in $kJ$)

When a system goes from state $A$ to state $B$,the change in internal energy is $40 \, kJ/mol$. If the system returns from state $B$ to state $A$ via a reversible path and then returns to state $A$ via an irreversible path,what is the net change in internal energy?

Vedclass Test Series

Exam Paper Generator

Online Exam Module