MEDIUM
JEE Main
IMPORTANT
Earn 100

What is the free energy change (ΔG) when 1.0 mole of water at 100°C and 1 atm pressure is converted into steam at 100°C and 1 atm pressure ?

50% studentsanswered this correctly

Important Questions on Thermodynamics

MEDIUM
JEE Main
IMPORTANT

For the process: H2O l1 bar, 373 KH2O g1 bar, 373 K, the correct set of the thermodynamic parameters is

MEDIUM
JEE Main
IMPORTANT

The value of log10K for a reaction AB is

Given:

rH298Ko=-54.07 kJ mol-1,rS298Ko=10 J K-1 mol-1, R=8.314 J K-1 mol-1,   2.303×8.314×298=5705 
MEDIUM
JEE Main
IMPORTANT
For a system at equilibrium the system acquires a state of
MEDIUM
JEE Main
IMPORTANT
The entropy change accompanying the evaporation of 1 mole of water at 100 °C, assuming that the latent heat of vaporisation of water is 540 cal g-1, in cal/K/mole is:
MEDIUM
JEE Main
IMPORTANT

The standard enthalpy of the formation of NH3 is -46.0 kJ mol-1. If the enthalpy of the formation of H2 from its atoms is -436 kJ mol-1 and that of N2 is -712 kJ mol-1, the average bond enthalpy of N-H bond in NH3 is:

MEDIUM
JEE Main
IMPORTANT

On the basis of the following thermochemical data:

ΔHf°Haq+=0

H2O(l)H+(aq)+OH-(aq);  ΔH°=57.32kJH2(g)+12O2(g)H2O(l);  ΔH°=-286.20kJ

The value of the enthalpy of formation of OH- ions at 25°C is:

MEDIUM
JEE Main
IMPORTANT
The equilibrium constant for the reaction A+BC+D is 10ΔG° for the reaction at 300 K is
MEDIUM
JEE Main
IMPORTANT
One mole of an ideal gas expands reversibly and isothermally at 300 K from 5dm3 to 50dm3. The work done by the gas for the process is equal to