7.
用\(\rm{CH_{4}}\)催化还原\(\rm{NO}\)\(\rm{{\,\!}_{x}}\)可以消除氮氧化物的污染,如下式子所示;已知\(\rm{NO}\),\(\rm{NO2}\)混合气体的密度是相同条件下氢气密度的\(\rm{17}\)倍,\(\rm{16g}\)甲烷和该混合气体恰好完全反应生成\(\rm{N2}\)、\(\rm{CO2}\)、\(\rm{H2O(g)}\)放出\(\rm{1042.8kJ}\)的热量,则\(\rm{\triangle H1}\)是
\(\rm{①CH_{4}(g)+4NO_{2}(g)=4NO(g)+CO_{2}(g)+2H_{2}O(g)\triangle }\)\(\rm{H}\)\(\rm{{\,\!}_{1}}\)
\(\rm{②CH_{4}(g)+4NO(g)=2N_{2}(g)+CO_{2}(g)+2H_{2}O(g)\triangle }\)\(\rm{H}\)\(\rm{{\,\!}_{2}=-1160kJ⋅mol^{-1}}\)