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85问答库 > 1:用石灰浆粉刷墙壁，干燥后为什么会变硬，请用化学原理解释该现象，并用化学方程式说明。 2:某工厂

1:用石灰浆粉刷墙壁，干燥后为什么会变硬，请用化学原理解释该现象，并用化学方程式说明。 2:某工厂

2025-04-07 04:24:22

推荐回答（1个）

回答1：

1、石灰浆的主要成分是氢氧化钙，遇到空气中的二氧化碳会反应
CO2+Ca(OH)2=CaCO3↓+H2O
2、设9.8t20%的的硫酸和铁反应，能生成X吨的硫酸亚铁
Fe+H2SO4=FeSO4+H2
98 152
9.8*20% X
X=3.04吨
可产生FeSO4的质量为3.04吨

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