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

If the work done during the isothermal reversible expansion of an ideal gas at a pressure of $10 \ atm$ from $4 \ L$ to a final volume is $-184.24 \ L \ atm$,the final volume of the gas in $L$ is

Which of the following are extensive properties?

The relation $\Delta H = \Delta U + P \Delta V$ is valid for a system under which of the following conditions?

$5 \ mol$ of an ideal monoatomic gas is compressed isothermally from $(40 \ L, 5 \ bar)$ to $4 \ L$. The magnitude of maximum work done on the gas in this compression is

For which of the following systems, the difference between $\Delta H$ and $\Delta U$ is not significant?
$(i)$ Solids
$(ii)$ Gases
$(iii)$ Mixture of gases and liquids
$(iv)$ Liquids

Vedclass Test Series

Exam Paper Generator

Online Exam Module