共50条信息
金刚石和石墨是碳元素的两种同素异形体在\(\rm{100kPa}\)时,\(\rm{1mol}\)石墨转化为金刚石要吸收\(\rm{1.895kJ}\)的热量,试判断在\(\rm{100kPa}\)压强下,下列结论不正确的是( )
金属\(\rm{Na}\)可在\(\rm{Cl_{2}}\)中燃烧,则\(\rm{(}\) \(\rm{)}\)
\(\rm{Mg}\)在\(\rm{CO_{2}}\)中燃烧生成\(\rm{MgO}\)和\(\rm{C}\),下列说法正确的是\(\rm{(}\) \(\rm{)}\)
已知: \(\rm{①CO(g) +H_{2}O(g)=CO_{2} (g)+H_{2} (g)}\) \(\rm{\triangle H = -41.2 kJ ⋅ mol-1}\),\(\rm{②CH_{4}(g) +H_{2}O(g)=CO(g) +3H_{2} (g)}\)的能量变化如下图所示
下列有关说法正确的是
进入组卷