Question

等质量的钠、镁、铝分别与足量稀硫酸反应，产生气体的质量比为

1. A.
   1∶2∶3
2. B.
   23∶24∶27
3. C.
   36∶69∶92
4. D.
   23∶12∶9

Answer 1

C
根据化学方程式计算如下：
2Na+H₂SO₄Na₂SO₄+H₂↑
46                                       2
m                                       
Mg+H₂SO₄MgSO₄+H₂↑
24                                       2
m                                       
2Al+3H₂SO₄Al₂(SO₄)₃+3H₂↑
54                                              6
m                                              
所以生成H₂的质量比为∶∶=∶∶=36∶69∶92