Embibe Experts Solutions for Chapter: Thermodynamics, Exercise 1: Exercise 1

Which one of the following is the correct relation of the First Law of thermodynamics?

$\mathrm{\Delta E}$ of combustion of isobutylene is $-\mathrm{X} \mathrm{kJ} {\mathrm{mol}}^{-1}$. The value of $\mathrm{\Delta H}$ is 

The value of $\mathrm{\Delta H}-\mathrm{\Delta E}$ in $\mathrm{J}$ for the following reaction at $27 °\mathrm{C}$ will be-

$2{\mathrm{NH}}_3\left(\mathrm{g}\right)⟶{\mathrm{N}}_2\left(\mathrm{g}\right)+3{\mathrm{H}}_2\left(\mathrm{g}\right)$

Consider the following processes:

                                $\mathrm{\Delta H}(\mathrm{kJ}/\mathrm{mol})$

$\frac{1}{2} \mathrm{A}⟶\mathrm{B} +150$

$3\mathrm{B}⟶2\mathrm{C}+\mathrm{D} -125$

$\mathrm{E}+\mathrm{A}⟶2\mathrm{D} +350$

For $\mathrm{B}+\mathrm{D}⟶\mathrm{E}+2\mathrm{C}, \mathrm{\Delta H}$ will be:

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

The efficiency of an hypothetical cell is about $84\%$ which involves the following reaction:

$\mathrm{A}\left(\mathrm{s}\right)+{\mathrm{B}}^{2+}\left(\mathrm{aq}\right)⟶{\mathrm{A}}^{2+}\left(\mathrm{aq}\right)+\mathrm{B}\left(\mathrm{s}\right); \mathrm{\Delta H}=-285 \mathrm{kJ}$

Then, the standard electrode potential of the cell will be (Assume as $\mathrm{\Delta S}=0$)

What is the free energy change $\left(\mathrm{\Delta G}\right)$ when $1.0 \mathrm{mol}$ of water at $100°\mathrm{C}$ and $1 \mathrm{atm}$ pressure is converted into steam at $100°\mathrm{C}$ and $1 \mathrm{atm}$ pressure?

Which one of the following is correct?