Question

£¨6·Ö£©·¢ÉäÎÀÐÇÓÃN2H4ΪȼÁÏ,NO2ΪÑõ»¯¼Á,Á½Õß·´Ó¦Éú³ÉN2ºÍË®ÕôÆø, ÒÑÖª
N2(g)+2O2(g)=2NO2(g)          ¨S H1 £½ £« 67.7kJ/mol£»
N2H4(g)+O2(g)= N2(g)+2H2O(g)  ¨S H2 £½ £­ 534kJ/mol£»
2H2(g)+ O2(g)= 2H2O(g)        ¨S H3 £½ £­ 484kJ/mol£»    
H2(g)+F2(g)=2HF(g)            ¨S H4 £½ £­ 538kJ/mol
д³öN2H4Óë NO2·´Ó¦µÄÈÈ»¯Ñ§·½³Ìʽ________________________________________,
д³öN2H4ÓëF2·´Ó¦µÄÈÈ»¯Ñ§·½³Ìʽ__________________________________________¡£

Answer 1

£¨1£©2N₂H₄(g)+2NO₂(g)=3N₂(g)+4H₂O(g)  ¦¤H£½¨C1135.7 kJ¡¤mol^£­1£¬
£¨2£©N₂H₄(g)+2F₂(g)=N₂(g)+4HF(g)  ¦¤H£½¨C1126kJ¡¤mol^£­1¡£

ÊÔÌâ·ÖÎö£ºÈô£º£¨1£© N2(g)+2O2(g)=2NO2(g)          ¨S H1 £½ £« 67.7kJ/mol£»
£¨2£©  N2H4(g)+O2(g)= N2(g)+2H2O(g)  ¨S H2 £½ £­ 534kJ/mol£»
£¨3£© 2H2(g)+ O2(g)= 2H2O(g)        ¨S H3 £½ £­ 484kJ/mol£»    
£¨4£©  H2(g)+F2(g)=2HF(g)            ¨S H4 £½ £­ 538kJ/mol
°Ñ£¨2£©´2-£¨1£©£¬ÔËÓøÇ˹¶¨Âɿɵãº
2N₂H₄(g)+2NO₂(g)=3N₂(g)+4H₂O(g)  ¦¤H=£­ 534kJ/mol´2-67.7kJ/mol= ¨C1135.7kJ¡¤mol^£­1
°Ñ£¨2£©-£¨3£©-£¨4£©´2£¬ÔËÓøÇ˹¶¨Âɿɵãº
N₂H₄(g)+2F₂(g)=N₂(g)+4HF(g)  
¦¤H£½£­ 534kJ/mol-£¨£­ 484kJ/mol£©-£¨£­ 538kJ/mol£©´2= ¨C1126kJ¡¤mol^£­1
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