已知热化学方程式:2H2(g)+O2(g)=2H2O(l) ∆H= —571.6kJ·mol—1
2CH3OH(l)+3O2(g)=2CO2(g)+4H2O(l)∆H=—1452kJ·mol—1
H+(aq)+OH—(aq)=H2O(l)∆H=—57.3kJ·mol—1
据此判断下列说法正确的是
A.CH3OH的燃烧热为1452kJ·mol—1
B.2H2(g)+O2(g)=2H2O(g)∆H>—571.6kJ·mol—1
C.2CH3OH(l)+O2(g)=2CO2(g)+4H2(g)∆H=—880.4kJ·mol—1
D.CH3COOH(aq)+NaOH(aq)=H2O(l)+CH3COONa(aq)∆H=—57.3kJ·mol—1
高三化学选择题中等难度题
已知热化学方程式:2H2(g)+O2(g)=2H2O(l) ∆H= —571.6kJ·mol—1
2CH3OH(l)+3O2(g)=2CO2(g)+4H2O(l)∆H=—1452kJ·mol—1
H+(aq)+OH—(aq)=H2O(l)∆H=—57.3kJ·mol—1
据此判断下列说法正确的是
A.CH3OH的燃烧热为1452kJ·mol—1
B.2H2(g)+O2(g)=2H2O(g)∆H>—571.6kJ·mol—1
C.2CH3OH(l)+O2(g)=2CO2(g)+4H2(g)∆H=—880.4kJ·mol—1
D.CH3COOH(aq)+NaOH(aq)=H2O(l)+CH3COONa(aq)∆H=—57.3kJ·mol—1
高三化学选择题中等难度题查看答案及解析
.已知:2H2(g)+O2(g)===2H2O(l) ΔH=-571.6 kJ·mol-1
2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l) ΔH=-1452 kJ·mol-1
H+(aq)+OH-(aq)===H2O(l) ΔH=-57.3 kJ·mol-1
下列说法正确的是
A.H2(g)的燃烧热为571.6 kJ·mol-1
B.同质量的H2(g)和CH3OH(l)完全燃烧,H2(g)放出的热量多
C.1/2H2SO4(aq)+1/2Ba(OH)2(aq)===1/2BaSO4(s)+H2O(l) ΔH=-57.3 kJ·mol-1
D.3H2(g)+CO2(g)=CH3OH(l)+H2O(l) ΔH=+135.9 kJ·mol-1
高三化学选择题简单题查看答案及解析
已知:
2H2(g)+O2(g)===2H2O(l) ΔH=-571.6 kJ·mol-1
2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l) ΔH=-1452 kJ·mol-1
H+(aq)+OH-(aq)===H2O(l) ΔH=-57.3 kJ·mol-1
下列说法正确的是:
A.H2(g)的燃烧热为571.6 kJ·mol-1
B.同质量的H2(g)和CH3OH(l)完全燃烧,H2(g)放出的热量多
C.H2SO4(aq)+Ba(OH)2(aq)===BaSO4(s)+H2O(l) ΔH=-57.3 kJ·mol-1
D.3H2(g)+CO2(g)=CH3OH(l)+H2O(l) ΔH=+135.9 kJ·mol-1
高三化学选择题中等难度题查看答案及解析
已知:2H2(g)+O2(g) ===2H2O(l) ΔH=-571.6 kJ·mol-1
2CH3OH(l)+3O2(g) ===2CO2(g)+4H2O(l) ΔH=-1452 kJ·mol-1
H﹢(aq)+OH﹣(aq) ===H2O(l) ΔH=-57.3 kJ·mol-1
下列说法正确的是
A.H2(g)的燃烧热为142.9kJ·mol-1
B.同质量的H2(g)和CH3OH(l)完全燃烧,H2(g)放出的热量多
C.H2SO4(aq)+1/2Ba(OH)2(aq)=1/2 BaSO4(s)+H2O(l) ΔH=-57.3 kJ·mol-1
D.3H2(g)+CO2(g) ===CH3OH(l)+H2O(l) ΔH=+131.4 kJ·mol-1
高三化学选择题中等难度题查看答案及解析
已知:
2H2(g)+O2(g)===2H2O(l) ΔH=-571.6 kJ·mol-1
2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l) ΔH=-1452 kJ·mol-1
H+(aq)+OH-(aq)===H2O(l) ΔH=-57.3 kJ·mol-1
下列说法正确的是
A.H2(g)的燃烧热为571.6 kJ·mol-1
B.同质量的H2(g)和CH3OH(l)完全燃烧,H2(g)放出的热量多
C.H2SO4(aq)+Ba(OH)2(aq)===BaSO4(s)+H2O(l)ΔH=-57.3 kJ·mol-1
D.3H2(g)+CO2(g)=CH3OH(l)+H2O(l) ΔH=+135.9 kJ·mol-1
高三化学选择题中等难度题查看答案及解析
已知:2H2(g)+O2(g)===2H2O(l) ΔH=-571.6 kJ·mol-1
2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l) ΔH=-1452 kJ·mol-1
H+(aq)+OH-(aq)===H2O(l) ΔH=-57.3 kJ·mol-1
下列说法正确的是
A.H2(g)的燃烧热为571.6 kJ·mol-1
B.H2SO4(aq)+Ba(OH)2(aq)=== BaSO4(s)+H2O(l) ΔH=-57.3 kJ·mol-1
C.同质量的H2(g)和CH3OH(l)完全燃烧,H2(g)放出的热量多
D.3H2(g)+CO2(g)===CH3OH(l)+H2O(l) ΔH=+131.4 kJ·mol-1
高三化学选择题简单题查看答案及解析
已知:
2H2(g)+O2(g)===2H2O(l) ΔH=-571.6 kJ·mol-1
2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l)ΔH=-1452 kJ·mol-1
H+(aq)+OH-(aq)===H2O(l) ΔH=-57.3 kJ·mol-1
下列说法正确的是 ( )
A. H2(g)的燃烧热为571.6 kJ·mol-1
B. 同质量的H2(g)和CH3OH(l)完全燃烧,H2(g)放出的热量多
C. H2SO4(aq)+Ba(OH)2(aq)===BaSO4(s)+H2O(l) ΔH=-57.3 kJ·mol-1
D. 3H2(g)+CO2(g)=CH3OH(l)+H2O(l) ΔH=+135.9 kJ·mol-1
高三化学单选题简单题查看答案及解析
已知:
2H2(g)+O2(g)===2H2O(l) ΔH=-571.6 kJ·mol-1
2CH3OH(l)+3O2(g)===2CO2(g)+4H2O(l) ΔH=-1452 kJ·mol-1
H+(aq)+OH-(aq)===H2O(l) ΔH=-57.3 kJ·mol-1
下列说法正确的是
A.H2(g)的燃烧热为571.6 kJ·mol-1
B.同质量的H2(g)和CH3OH(l)完全燃烧,H2(g)放出的热量多
C.H2SO4(aq)+Ba(OH)2(aq)===BaSO4(s)+H2O(l) ΔH=-57.3 kJ·mol-1
D.3H2(g)+CO2(g)=CH3OH(l)+H2O(l) ΔH=+135.9 kJ·mol-1
高三化学选择题中等难度题查看答案及解析
已知:2H2(g)+O2(g)=2H2O(l) ΔH=-571.6 kJ·mol-1
2CH3OH(l)+3O2(g)=2CO2(g)+4H2O(l) ΔH=-1452 kJ·mol-1
H+(aq)+OH-(aq)=H2O(l) ΔH=-57.3 kJ·mol-1
下列说法正确的是 ( )
A.H2(g)的燃烧热为571.6 kJ·mol-1
B.同质量的H2(g)和CH3OH(l)完全燃烧,H2(g)放出的热量多
C. H2SO4(aq)+Ba(OH)2(aq)= BaSO4(s)+H2O(l) ΔH=-57.3 kJ·mol-1
D.3H2(g)+CO2(g)=CH3OH(l)+H2O(l) ΔH=+135.9 kJ·mol-1
高三化学选择题中等难度题查看答案及解析
已知:2H2(g)+O2(g)=2H2O(l) ΔH=-571.6 kJ·mol-1
2CH3OH(l)+3O2(g)=2CO2(g)+4H2O(l) ΔH=-1452 kJ·mol-1
H+(aq)+OH-(aq)=H2O(l) ΔH=-57.3 kJ·mol-1
下列说法正确的是( )
A. H2(g)的燃烧热为571.6kJ·mol-1
B. 同质量的H2(g)和CH3OH(l)完全燃烧,H2(g)放出的热量多
C. 1/2H2SO4(aq)+1/2Ba(OH)2(aq)=1/2BaSO4(s)+H2O(l)ΔH=-57.3kJ·mol-1
D. 3H2(g)+CO2(g)=CH3OH(l)+H2O(l)ΔH=+135.9kJ·mol-1
高三化学选择题困难题查看答案及解析