Water is supercooled to `- 4^(@)C`. The enthalpy `(H)` is

Water is supercooled to -4^(@)C . The enthalpy (H) of the supercooled water is-

The enthalpy of neutralization of oxitic acid by strong acid is 25.4 kcal mol^(-1) . The enthalpy of neutralization of strong acid and strong base is -13.7 kcal equil^(-1) . The enthalpy of dissociation of H_(2)C_(2)O_(4)hArr2H^(+)+C_(@)O_(4)^(2-) is

H_(2)(g)+(1)/(2)O_(2)(g)to H_(2)O(l) , Delta H at 298 K = - 285.8 kJ The molar enthalpy of vapourization of water at 1 atm and 25^(@)C is 44 kJ. The standard enthalpy of formation of 1 mole of water vapour at is

What fraction of water supercooled down to the temperature t = -20 ^@C under standard pressure turns into ice when the system passes into the equilibrium state ? At what temperature of the supercooled water does it turn into ice completely ?