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(Solved): 3. A. Write a balanced chemical equation for the gas phase reaction between ammonia and oxygen form ...
3. A. Write a balanced chemical equation for the gas phase reaction between ammonia and oxygen forming nitrogen(II) oxide (nitric oxide) and \( \mathrm{H}_{2} \mathrm{O}(\mathrm{g} \) ) B. Use the standard enthalpies of formation given below to calculate the following: (i) sum of enthalpies of formation of the reactants, (ii) sum of enthalpies of formation of the products, (iii) for the reaction. C. State whether the reaction is exothermic or endothermic?
Expert Answer
A. B. (i) ?H°reactants = 4*?H°f(NH3) + 5*?H°f(O2) = [ 4*(-46) + 5*(0) ] kJ/mol = -184 kJ/mol ? (i