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¢ÙHCl(aq) + NH3?H2O(aq)= NH4Cl(aq) + H2O(l) £»¡÷H=£a kJ/mol
¢ÚHCl(aq) + NaOH(s) = NaCl(aq) + H2O(l) £»¡÷H=£b kJ/mol
¢ÛHNO3(aq) + KOH(aq) = KNO3(aq) + H2O(l) £»¡÷H=£c kJ/mol
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