网址:http://m.1010jiajiao.com/timu3_id_38105[举报]
已知氢气和碳燃烧的热化学方程式为:
①2H2(g)+O2(g)=2H2O(l) △H1=-akJ·mol-1
②H2(g)+1/2O2(g)=H2O(g) △H2=-bkJ·mol-1
③C(s)+1/2O2(g)=CO(g) △H3=-ckJ·mol-1
④C(s)+O2(g)=CO2(g) △H4=-dkJ·mol-1
下列说法错误的是
A.氢气的燃烧热为△H=-akJ·mol-1 B.c<d
C.一氧化碳的燃烧热为△H=-(d-c)kJ·mol-1 D.0.5a>b
查看习题详情和答案>>
已知下列热化学方程式
(l) C(s)+1/2O2(g)=CO(g) △H1=-110.5kJ/mol
(2) =2H2O(g) △H2=-483.6 kJ·
由此可知 C(s)+ H2O(g) == CO(g) + H2(g) △H3 。则 ΔH3等于( )
A. +131.3kJ·mol—1 B. -131.3kJ·mol—1
C. +373.1kJ·mol—1 D. - 373.1kJ·mol—1
查看习题详情和答案>>
已知下列热化学方程式
(l) C(s)+1/2O2(g)=CO(g) △H1=-110.5kJ/mol
(2) =2H2O(g) △H2=-483.6 kJ·
由此可知 C(s)+ H2O(g) == CO(g) + H2(g) ΔH3 。则 ΔH3等于
A. +131.3kJ·mol—1 B. -131.3kJ·mol—1
C. +373.1kJ·mol—1 D. - 373.1kJ·mol—1
查看习题详情和答案>>
已知氢气和碳燃烧的热化学方程式为:
①2H2(g)+O2(g)=2H2O(l) △H1=-akJ·mol-1
②H2(g)+1/2O2(g)=H2O(g) △H2=-bkJ·mol-1
③C(s)+1/2O2(g)=CO(g) △H3=-ckJ·mol-1
④C(s)+O2(g)=CO2(g) △H4=-dkJ·mol-1
下列说法错误的是
A.氢气的燃烧热为△H=-akJ·mol-1 | B.c<d |
C.一氧化碳的燃烧热为△H=-(d-c)kJ·mol-1 | D.0.5a>b |