題目列表(包括答案和解析)
已知下列熱化學(xué)方程式:
(1)CH3COOH(l)+2O2(g) === 2CO2(g)+2H2O(l) △H1= -870.3kJ·mol-1
(2)C(s)+O2(g) === CO2(g) △H2= -393.5 kJ·mol-1
(3)H2(g)+O2(g) === H2O(l) △H3= -285.8 kJ·mol-1
則反應(yīng)2C(s)+2H2(g)+O2(g)===CH3COOH(l) 的焓變△H為( )kJ·mol-1
A.488.3 B.-244.15 C.244.15 D.-488.3
已知下列熱化學(xué)方程式:
(1)CH3COOH(l)+2O2(g) === 2CO2(g)+2H2O(l) △H1= -870.3 kJ·mol-1
(2)C(s)+O2(g) === CO2(g) △H2= -393.5 kJ·mol-1
(3)H2(g)+O2(g) === H2O(l) △H3= -285.8 kJ·mol-1
則反應(yīng)2C(s)+2H2(g)+O2(g)===CH3COOH(l) 的△H為( )kJ·mol-1
A.+488.3 B.-244.15 C.-488.3 D. +244.15
.已知下列熱化學(xué)方程式:
(1)CH3COOH(l)+2O2(g) === 2CO2(g)+2H2O(l) △H1= -870.3 kJ·mol-1
(2)C(s)+O2(g) === CO2(g) △H2= -393.5 kJ·mol-1
(3)H2(g)+O2(g) === H2O(l) △H3= -285.8 kJ·mol-1
則反應(yīng)2C(s)+2H2(g)+O2(g)===CH3COOH(l) 的焓變△H為( )kJ·mol-1
A.488.3 B.-244.15 C.244.15 D.-488.3
已知下列熱化學(xué)方程式:
(1)CH3COOH(l)+2O2(g) === 2CO2(g)+2H2O(l) △H1= -870.3 kJ·mol-1
(2)C(s)+O2(g) === CO2(g) △H2= -393.5 kJ·mol-1
(3)H2(g)+O2(g) === H2O(l) △H3= -285.8 kJ·mol-1
則反應(yīng)2C(s)+2H2(g)+O2(g)===CH3COOH(l) 的焓變△H為( )kJ·mol-1
A.488.3 B.-244.15 C.244.15 D.-488.3
已知下列熱化學(xué)方程式:
(1)CH3COOH(l)+2O2(g) === 2CO2(g)+2H2O(l) △H1= -870.3 kJ·mol-1
(2)C(s)+O2(g) === CO2(g) △H2= -393.5 kJ·mol-1
(3)H2(g)+O2(g) === H2O(l) △H3= -285.8 kJ·mol-1
則反應(yīng)2C(s)+2H2(g)+O2(g)===CH3COOH(l) 的焓變△H為( )kJ·mol-1
A.488.3 B.-244.15 C.244.15 D.-488.3
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