A.铜的金属活泼性比铁的弱,可在海轮外壳上镶入若干铜块以减缓其腐蚀 |
B.若反应过程中断开化学键放出的能量大于形成化学键所吸收的能量,则反应放热 |
C.一定温度下,增大反应2BaO2(s)2BaO(s)+O2(g)容器的体积,平衡不移动 |
D.反应CO2(g)+H2(g)CO(g)+H2O(g) ΔH>0能自发进行,可知该反应ΔS>0 |
同类型试题
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2