下列能量变化表示氢气燃烧热的是
| A．H2(g) + 1/2O2(g) = H2O(g)△H =" -241.8" kJ/mol |
| B．2H2(g) + O2(g) = 2H2O(g)△H =" -483.6" kJ/mol |
| C．2H2(g) + O2(g) = 2H2O(l)△H =" -571.6" kJ/mol |
| D．H2(g) + 1/2O2(g) = H2O(l)△H =" -285.8" kJ/mol |
下列能量变化表示氢气燃烧热的是
| A．H2(g) + 1/2O2(g) = H2O(g)△H =" -241.8" kJ/mol |
| B．2H2(g) + O2(g) = 2H2O(g)△H =" -483.6" kJ/mol |
| C．2H2(g) + O2(g) = 2H2O(l)△H =" -571.6" kJ/mol |
| D．H2(g) + 1/2O2(g) = H2O(l)△H =" -285.8" kJ/mol |
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