The following sequence of reaction occurs in commercial production of aqueous of aqueous nitric acid. `{:(4 NH_(3) (g) + 5O_(2) (g) rarr 4NO (g) + 6 H_(2) O (l),Delta H = - 904 kJ.....(1),),(2 NO (g) + O_(2) (g) rarr 2NO_(2) (g) ,Delta H = - 112 kJ.....(2),),(3 NO_(2) (g) + H_(2) O (l) rarr 2HNO_(3) (aq) + NO (g),Delta H = - 140 kJ.....(3),):}` Determine the total heat liberated (in kJ/mol) at constant pressure for the production of exactly 1 mole of aqueous nitric acid from `NH_(3)` by this process.A. 986B. 493C. 246.5D. none of these

The following sequence of reaction occurs in commercial production of

1.	The following sequence of reaction occurs in commercial production of aqueous of aqueous nitric acid. `{:(4 NH_(3) (g) + 5O_(2) (g) rarr 4NO (g) + 6 H_(2) O (l),Delta H = - 904 kJ.....(1),),(2 NO (g) + O_(2) (g) rarr 2NO_(2) (g) ,Delta H = - 112 kJ.....(2),),(3 NO_(2) (g) + H_(2) O (l) rarr 2HNO_(3) (aq) + NO (g),Delta H = - 140 kJ.....(3),):}` Determine the total heat liberated (in kJ/mol) at constant pressure for the production of exactly 1 mole of aqueous nitric acid from `NH_(3)` by this process.A. 986B. 493C. 246.5D. none of these
Answer» Correct Answer - B 1 mole of `HNO_(3)=3/2` moles of `NO_(2) rarr 3/2` mole of `NO rarr 3/2` mole of `NH_(3)` `(3/2xx1/4)(904)-(3/2xx1/2)(112)-(3/2xx1/3)(140)=493" kJ/mol"` Heat liberated `=493" kJ/mol"`

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