\[{{H}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\,\,\to \,\,{{H}_{2}}O(l)\]; \[\Delta H\] at 298 K = ? 285.8 kJ The molar enthalpy of vaporisation of water at 1 atm and \[{{25}^{o}}C\] is 44 kJ. The standard enthalpy of formation of 1 mole of water vapour at \[{{25}^{o}}C\] is [KCET 1999]

\[{{H}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\,\,\to \,\,{{H}_{2}}O(l)\]; \[\

1.	\[{{H}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\,\,\to \,\,{{H}_{2}}O(l)\]; \[\Delta H\] at 298 K = ? 285.8 kJ The molar enthalpy of vaporisation of water at 1 atm and \[{{25}^{o}}C\] is 44 kJ. The standard enthalpy of formation of 1 mole of water vapour at \[{{25}^{o}}C\] is [KCET 1999]
A.	? 241.8 kJ
B.	241.8 kJ
C.	329.8 kJ
D.	?329.8 kJ
Answer» B. 241.8 kJ

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\[{{H}_{2}}(g)+\frac{1}{2}{{O}_{2}}(g)\,\,\to \,\,{{H}_{2}}O(l)\]; \[\Delta H\] at 298 K = ? 285.8 kJ The molar enthalpy of vaporisation of water at 1 atm and \[{{25}^{o}}C\] is 44 kJ. The standard enthalpy of formation of 1 mole of water vapour at \[{{25}^{o}}C\] is [KCET 1999]

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