(1)CaCO
3+CO
2 + H
2O
Ca(HCO
3)
2 (2)③②①④⑤
|
Na
2SiO
3在酸性的NH
4Cl溶液中会生成硅酸胶状物,而使模具凝固成型
|
D
|
(1)NaOH溶液 浓H 2SO 4 稀H 2SO 4 (2)CO b a CO 2+2OH -====CO +H 2O (3)CO 2 a b CO +2H +====H 2O+CO 2↑ |
D
|
A
|
B
|
C
|
A
|
D
|