Embibe Experts Solutions for Chapter: Thermodynamics, Exercise 2: Exercise 2

For a reaction $\mathrm{A}\left(\mathrm{g}\right)\rightleftharpoons \mathrm{B}\left(\mathrm{g}\right)$ at equilibrium, the partial pressure of $\mathrm{B}$ is found to be one-fourth of the partial pressure of $\mathrm{A}$. The value of $\mathrm{\Delta G}°$ of the reaction $\mathrm{A}\to \mathrm{B}$ is

Given, ${\mathrm{H}}_2\left(\mathrm{g}\right)+{\mathrm{Br}}_2\left(\mathrm{g}\right)⟶2\mathrm{HBr}\left(\mathrm{g}\right), {\mathrm{\Delta H}}_1^0$ and the standard enthalpy of condensation of bromine is ${\mathrm{\Delta H}}_2^0$, the standard enthalpy of formation of $\mathrm{HBr}$ at $25°\mathrm{C}$ is:

Which of the following statements about the spontaneous reaction occurring in a galvanic cell is always true?

A well stoppered thermos flask contains some ice Cubes. This is an example of a 

If a refrigerator door is opened then we get

Internal energy of an ideal gas depends on:

The internal energy change when a system goes from state A to B is 40 kJ/mole. If the system goes from A to B by a reversible path and returns to state A by an irreversible path what would be the net change in internal energy?    

The standard molar heat of formation of ethane, ${\text{CO}}_{\text{2}}{\text{ and H}}_{\text{2}}{\text{O}}_{\text{(l)}}$ are respectively $\text{-21.1, -94.1, and -68.3 kcal}$. The standard molar heat of combustion of ethane will be _____.