[Soda ash knowledge] Daily question (51) 09.11.23
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Please hide the reply. If you do not hide it, you will not be graded in principle. Specific hiding methods: http://bbs.hcbbs.com/viewthread.php?tid=492556&highlight=%D2%FE%B2%D8 Edited posts are not graded. (The title of this issue is taken from page 74 of "Technical Worker Job Training Question Bank - Soda Ash Production Operator". The electronic version of the book is available for download in the soda ash information sharing area. http://bbs.hcbbs.com/thread-13140-1-2.html ) Fill in the blanks 6. The validity period of 0.2mol/L NaOH standard solution is generally () months. 7. There are two types of standard solution preparation: () and (). 8. Acid-base titration method can be divided into ( ), ( ) and ( ) according to different titration methods. 9. When AgNO3 is used to measure TCL- in the mother liquor, it belongs to ( ) titration. 10. The method of using EDTA to determine the Ca2+ and Mg2+ contents in the mother liquor is called ( ) titration method.
6. The validity period of 0.2mol/L NaOH standard solution is generally (2) months. 7. There are two types of standard solution preparation: (direct preparation method) and (calibration method). 8. Acid-base titration method can be divided into (direct titration), (back titration) and (displacement titration) according to different titration methods. 9. When AgNO3 is used to determine TCL- in the mother liquor, it is a (precipitation) titration. 10. The method of using EDTA to determine the Ca2+ and Mg2+ contents in the mother liquor is called (coordination) titration.
6. 2 7. Direct preparation method, calibration method 8, direct titration, back titration, displacement titration 9, precipitation 10, coordination
6.2 7. Direct preparation method, calibration method 8. Direct titration, back titration, displacement titration 9. Precipitation 10. Coordination
6. 2 7. Direct preparation method, calibration method 8. Direct titration, back titration, displacement titration 9. Precipitation 10. Coordination
(1)2； (2) Direct preparation method, calibration method ； (3) Direct titration, back titration, displacement titration ； (4) Precipitation ； (5) Coordination
1. 2 2. Direct preparation method calibration method 3. Direct instant titration back titration displacement titration 4. Precipitation titration 5. Coordination
6. The validity period of 0.2mol/L NaOH standard solution is generally (2) months. 7. There are two types of standard solution preparation: (direct preparation method) and (calibration method). 8. Acid-base titration method can be divided into (direct titration), (back titration) and (displacement titration) according to different titration methods. 9. When AgNO3 is used to determine TCL- in the mother liquor, it is a (precipitation) titration. 10. The method of using EDTA to determine the Ca2+ and Mg2+ contents in the mother liquor is called (coordination) titration.
6.2 7. Direct preparation method, calibration method 8. Direct titration, back titration, displacement titration 9. Precipitation 10. Coordination
1# chen3jun 6. The validity period of 0.2mol/L NaOH standard solution is generally (2) months. 7. There are two types of standard solution preparation: (direct preparation method) and (calibration method). 8. Acid-base titration method can be divided into (direct titration), (back titration) and (displacement titration) according to different titration methods. 9. When AgNO3 is used to determine TCL- in the mother liquor, it is a (precipitation) titration. 10. The method of using EDTA to determine the Ca2+ and Mg2+ contents in the mother liquor is called (coordination) titration.
6. The validity period of 0.2mol/L NaOH standard solution is generally (2) months. 7. There are two types of standard solution preparation: (direct preparation method) and (calibration method). 8. Acid-base titration method can be divided into (direct titration), (back titration) and (displacement titration) according to different titration methods. 9. When AgNO3 is used to determine TCL- in the mother liquor, it is a (precipitation) titration. 10. The method of using EDTA to determine the Ca2+ and Mg2+ contents in the mother liquor is called (coordination) titration.