第五章单元测试
- What is the common name of ferrous ammonium sulfate(硫酸亚铁铵)? （ ）
- What is the color of ferrous ammonium sulfate(硫酸亚铁铵) crystals? （ ）
- What is the purpose of adding sulfuric acid(硫酸) to the ferrous ammonium sulfate(硫酸亚铁铵) solution before titration? （ ）
- What is the color change at the end point of the redox titration of ferrous ammonium sulfate(硫酸亚铁铵) （ ）
- Ferrous ammonium sulfate(硫酸亚铁铵) is oxidized by KMnO4 in acidic medium. （ ）
A:Iron alum B:Mohr's salt C:Epsom salt D:Glauber's salt
答案:Mohr's salt
A:Green B:Blue C:White D:Purple
A:To neutralize(中和) the excess ammonia B:To increase the solubility of ferrous ammonium sulfate C:To increase the concentration of iron(II) ions D:To prevent the oxidation of iron(II) to iron(III)
A:From brown to yellow B:From colorless to pink C:From yellow to brown D:From pink to colorless
A:对 B:错
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