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1. ˽ⷴӦȡȻѧʽȸ˽ȷӦͷȷӦԭ;
2. Ȼѧʽдע
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һѧ̽
1. ѧĻѧӦУЩǷȷӦЩȷӦ?
2.΢(ѧĶѺγ)ĽǶۣΪʲôЩӦǷȵģЩӦȵ?
3. зӦ;Ӧ÷ ʾλһ ѧѧУһо £ зķӦųյ
4.ԷȷӦHΪ H 0;ȷӦHΪ H 0
5.ʲôȻѧʽ?ΪʲôдȻѧʽʱҪעӦľۼ״̬?
6.˵ȻѧʽһĻѧʽʲô?дȻѧʽʱҪעʲô?
ܽ
ڻѧӦзųյͨӦȡӦ÷šHʾλһΪkJ/mol H<0 ʱΪȷӦ;H>0 ʱΪȷӦ ӦųյĻѧʽȻѧʽдȻѧʽʱӦע⣺
(1)עHġ+롰-ȷӦΪ-ȷӦΪ+;
(2)ҪעӦľۼ״̬
(3)ʽҪƽȻѧʽǰĻѧҲǷͨȼ1mol ʻ1mol H2O(l)Ϊ׼
(4)עӦ¶Ⱥѹǿ(עָͨ101kPa25)
ۡ
1.ӦееӦתΪʱ H 0;֮Ӧе еӦתΪʱ H 0
2. 4ȫȼʱų37kJ÷ӦȻѧʽǣ
3.ͬͬѹ£иȻѧʽУH2>H1( ). A.2H2(g) + O2(g)= 2H2O(g);H1 2H2(g) + O2(g) = 2H2O(l);H2 B.S(g) + O2(g) =SO2(g); H1 S(s) + O2(g) = SO2(g);H2 C.CO(g) + 1/2 O2(g) = CO2(g);H1 2CO(g) + O2(g) = 2CO2(g);H2 D.H2(g) +Cl2(g)=2HCl(g);H1 1/2 H2(g) + 1/2 Cl2(g) = HCl(g);H2
4.һ£COCH4ȼյȻѧʽֱΪ
2CO(g) + O2(g) = 2CO2(g);H =-566kJ
CH4(g) + 2O2(g) = CO2(g) + 2H2O(l);H =-890kJ
1molCO3molCH4ɵĻȫȼʱͷŵΪ( )
A.2912kJ B.2953kJ C.3236kJ D.3867kJ
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