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

Among the following,the state function$(s)$ is(are):
$A$. Internal energy
$B$. Irreversible expansion work
$C$. Reversible expansion work
$D$. Molar enthalpy

Identify the intensive quantity from the following.

The work done during the expansion of $1 \ mol$ of an ideal gas into a vacuum is ............ .

Which of the following statements is not correct?

An ideal gas expands from $1 \times 10^{-3} \ m^{3}$ to $1 \times 10^{-2} \ m^{3}$ at $300 \ K$ against a constant external pressure of $1 \times 10^{5} \ Nm^{-2}$. The work done is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module