If the standard molar enthalpy change for combustion of graphite powder is $-2.48 \times 10^2 \mathrm{~kJ} \mathrm{~mol}^{-1}$ , the amount of heat generated on combustion...

The incorrect expression among the following is:

The process with negative entropy change is :

200 mL of 0.2 M HCl is mixed with 300 mL of 0.1 M NaOH . The molar heat of neutralization of this reaction is...

When 400 mL of $0.2 \mathrm{M} \mathrm{H}_2 \mathrm{SO}_4$ solution is mixed with 600 mL of 0.1 M NaOH solution, the increase in temperature of the...

For the reaction $2 \mathrm{NO}_2(\mathrm{~g}) \mathrm{N}_2 \mathrm{O}_4(\mathrm{~g})$, when $\Delta \mathrm{S}=-176.0 \mathrm{JK}^{-1}$ and $\Delta \mathrm{H}=-57.8 \mathrm{~kJ} \mathrm{~mol}^{-1}$, the magnitude of $\Delta \mathrm{G}$ at 298 K for...

The number of atoms in 8 g of sodium is $x \times 10^{23}$. The value of x is________.(Nearest integer)
[Given: $\mathrm{N}_{\mathrm{A}}=6.02 \times 10^{23} \mathrm{~mol}^{-1}$ Atomic...

For silver, $\mathrm{C}_{\mathrm{D}}\left(\mathrm{JK}^{-1} \mathrm{~mol}^{-1}\right)=23+0.01 \mathrm{~T}$. If the temperature (T) of 3 moles of silver is raised from 300 K to 1000 K at 1 atm...

A system does 200 J of work and at the same time absorbs 150 J of heat. The magnitude of the change in internal energy...

Which one of the following equations does not correctly represent the first law of thermodynamics for the given processes involving an ideal gas? (Assume non-expansion...