1.
下列两组热化学方程式中,有关\(\rm{\triangle H}\)的比较正确的是\(\rm{(}\) \(\rm{)}\)
\(\rm{①CH_{4}(g)+2O_{2}(g)═CO_{2}(g)+2H_{2}O(g)\triangle H_{1}CH_{4}(g)+2O_{2}(g)═CO_{2}(g)+2H_{2}O(l)\triangle H_{2}}\)
\(\rm{②NaOH(aq)+ \dfrac {1}{2}H_{2}SO_{4}(}\)浓\(\rm{)═ \dfrac {1}{2}Na_{2}SO_{4}(aq)+H_{2}O(l)\triangle H_{3}}\)
\(\rm{NaOH(aq)+CH_{3}COOH(aq)═CH_{3}COONa(aq)+H_{2}O(l)\triangle H_{4}}\).