The enthalpy of solution , sodium and sodium oxide in large volume of water , are -18KJ/mole and -238KJ/mol, respectively . If the enthalpy of formation of water is -286 KJ/mol, then what is the enthalpy of formation of sodium oxide ? All the enthalpies are at 298K and 1 bar pressure. [Given : reaction involved are `2Na(s)+2H_(2)O(l)to 2NaOH(aq)+H_(2)(g)`` Na_(2)O(s)+H_(2)O(l)to2NaOH(aq)`A. `+54KJ//mol`B. `-130KJ//mol`C. `-416KJ//mol`D. `+156KJ//Mol`

The enthalpy of solution , sodium and sodium oxide in large volume of

1.	The enthalpy of solution , sodium and sodium oxide in large volume of water , are -18KJ/mole and -238KJ/mol, respectively . If the enthalpy of formation of water is -286 KJ/mol, then what is the enthalpy of formation of sodium oxide ? All the enthalpies are at 298K and 1 bar pressure. [Given : reaction involved are `2Na(s)+2H_(2)O(l)to 2NaOH(aq)+H_(2)(g)`` Na_(2)O(s)+H_(2)O(l)to2NaOH(aq)`A. `+54KJ//mol`B. `-130KJ//mol`C. `-416KJ//mol`D. `+156KJ//Mol`
Answer» Correct Answer - c

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