第十章单元测试
- During cation analysis, methods to eliminate interfering ions include （ ）.
- Which of the following is not an obvious phenomenon of ion identification reaction? （ ）
- The two acids in the two acids and two bases method of analysis are （ ）.
- The two bases in the two acids and two bases method of analysis are（ ）。
- Which sulfates(硫酸盐) are easily soluble in water? （ ）
A:Adding masking agent B:pH control C:Adding oxidant D:<span style="color:inherit; font-family: "PingFang SC"; font-size: 16px; caret-color:inherit;">All optional</span>
答案:<span style="color:inherit; font-family: "PingFang SC"; font-size: 16px; caret-color:inherit;">All optional</span>
A:Temperature change B:Color change C:Gas evolution D:Precipitate formation or dissolution
A:H2SO4 B:HNO3 C:HCl D:HAc
A:NH3·H2O B:NaOH C:KOH D:Na2CO3
A:Ba2+ B:Pb2+ C:Ni2+ D:Fe3+
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