(命题范围:第一章全部第二章第1节)
一.选择题(每题3分)
1:已知葡萄糖的燃烧热是-2804kJ/mol,当它氧化生成1g液态水时放出的热量是 ()
A.26.0kJ B.51.9 kJ C.155.8 kJ D.467.3kJ
2:已知在1ⅹ105Pa ,298K条件下,2mol氢气燃烧生成水蒸气放出484kJ热量,下列热化学方程式正确的是 ()
A.H2O(g)=H2(g)+1/2O2(g) ΔH = + 242kJ/mol
B.2H2(g)+O2(g) = 2H2O(l) ΔH = - 484kJ/mol
C.H2(g)+O2(g) = H2O(g) ΔH = + 242kJ/mol
D.2H2(g)+O2(g) = 2H2O(g) ΔH = + 484kJ/mol
3.甲醇质子交换膜燃料电池中将甲醇蒸气转化为氢气的两种反应原理是
①CH3OH(g)+ H2O(g) = CO2(g)+3H2(g) DH = + 49.0 kJ·mol-1
②CH3OH(g)+O2(g) = CO2(g)+2H2(g) DH = -192.9 kJ·mol-1