题目

氮氧化物治理是环境学家研究的热点之一。回答下列问题: (1) NH3还原法。研究发现NH3还原NO的反应历程如图1。下列说法正确的是____(填标号)。 A . Fe3+能降低总反应的活化能,提高反应速率 B . 总反应为6NO+4NH3=5N2+6H2O C . 该反应历程中形成了非极性键和极性键 (2) 已知有关反应如下:①C(s)+O2(g)=CO2(g) ΔH1=-393.5kJ·mol-1②CO2(g)+C(s)=2CO(g) ΔH2=+172.5kJ·mol-1③NO和CO反应的能量变化如图2所示。2NO(g)=N2(g)+O2(g) ΔH=kJ·mol-1。 (3) H2还原法。已知用动词的正确形式填空:(10) 1  It’s good              (do) some exerciser in the morning. 2. The Wangs are preparing                (visit)the World Park. 3.He             (tell) the news to us yesterday morning. 4.We                 (not read) English papers tonight. 5.Mike often               (swim) in summer. 6.Look! The children               (skate) on the ice. 7. If it             (rain) tomorrow, we’ll stay in school. 8.Miss Green agrees              (take)me to New York. 9.Do you want                (buy)a new bike? 10.There                (be) a French film this evening.
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