大学MOOC Inorganic chemistry experiment(Dalian University of Technology)1463242167 最新慕课完整章节测试答案
Chapter 10. Preparation of Potassium Trioxalatoferrate (III)
文章目录
- Chapter 10. Preparation of Potassium Trioxalatoferrate (III)
- Chapter 11. Preparation of Ferrous Citrate
- Chapter 12. Preparation of potassium nitrosodisulphonate
- Chapter 13. Preparation of Zinc Gluconate
- Chapter 14. Preparation of chromium (III) complexes and the determination of splitting energy
- Chapter 2. Purification of Sodium Chloride
- Chapter 3. Purification of Copper Sulfate
- Chapter 4. Acid-Base Reaction and Buffer Solution
- Chapter 5. Complexes and Precipitation-Dissolution Equilibrium
- Chapter 6. Oxidation-reduction Reactions
- Chapter 7. Properties of p-Block Elements
- Chapter 8. Preparation of d-Block Elements
- Chapter 9. Preparation of Zinc-Containing Drugs
Quiz-Chapter 10. Preparation of Potassium Trioxalatoferrate (III)
1、判断题：
Ferrous oxalate reacts with saturated K2C2O4 solution to form potassium ferrioxalate (III) solution and ferric hydroxide precipitation.
选项：
A: 正确
B: 错误
答案: 【 正确】
2、判断题：
Two drops of KSCN solution were added to the potassium ferrioxalate (III) solution, and the solution turned yellow.
选项：
A: 正确
B: 错误
答案: 【 错误】
Chapter 11. Preparation of Ferrous Citrate
Quiz-Chapter 11. Preparation of Ferrous Citrate
1、判断题：
When synthesizing ferrous carbonate, the pH of the solution should be controlled at 5-6 to prevent the hydrolysis of ferrous ion.
选项：
A: 正确
B: 错误
答案: 【 正确】
2、判断题：
In the experiment of preparing ferrous citrate, iron nails should be added in every step to prevent the oxidation of Fe2 +.
选项：
A: 正确
B: 错误
答案: 【 正确】
Chapter 12. Preparation of potassium nitrosodisulphonate
Quiz-Chapter 12. Preparation of potassium nitrosodisulphonate
1、判断题：
Potassium nitrosodisulfonate is orange yellow or yellow brown crystal, and its aqueous solution is purple.
选项：
A: 正确
B: 错误
答案: 【 正确】
2、判断题：
Sodium bisulfite solution for the preparation of potassium nitrosodisulfonate needs to be prepared immediately before use to avoid its oxidation by air.
选项：
A: 正确
B: 错误
答案: 【 正确】
3、判断题：
The crystal of potassium nitrosodisulfonate decomposes slowly in neutral solution.
选项：
A: 正确
B: 错误
答案: 【 错误】
Chapter 13. Preparation of Zinc Gluconate
Quiz-Chapter 13. Preparation of Zinc Gluconate
1、判断题：
Gluconic acid can be prepared by the reaction of calcium gluconate with concentrated sulfuric acid.
选项：
A: 正确
B: 错误
答案: 【 正确】
2、判断题：
In order to precipitate zinc gluconate crystal as soon as possible, the filtrate should be heated and concentrated on a bunsen lamp to 1 / 3 of the original volume.
选项：
A: 正确
B: 错误
答案: 【 错误】
Chapter 14. Preparation of chromium (III) complexes and the determination of splitting energy
Chapter 2. Purification of Sodium Chloride
Quiz-Chapter 2. Purification of Sodium Chloride
1、单选题：
In the experiment of purification of sodium chloride, in which step can potassium ion be removed？
选项：
A: Dissolution and filtration
B: Adding barium chloride solution
C: Adding sodium carbonate solution
D: Evaporation and crystallization
答案: 【 Evaporation and crystallization】
2、单选题：
In the experiment of purification of sodium chloride, the filtrate is transferred to an evaporating dish and evaporated until the solution is in what state?
选项：
A: Boiling starts
B: Crystal film appears
C: Be a thin paste
D: Evaporate to dryness
答案: 【 Be a thin paste】
3、单选题：
What color is the precipitate produced in the identification reaction of magnesium ion?
选项：
A: Blue
B: Green
C: Brown
D: Pink
答案: 【 Blue】
4、单选题：
In what medium should the identification of calcium ion be carried out？
选项：
A: Hydrochloric acid
B: Sodium hydroxide
C: Acetic acid
D: Deionized water
答案: 【 Acetic acid】
5、单选题：
In which medium should the identification of magnesium ion be carried out?
选项：
A: Alkaline
B: Acidic
C: Neutral
D: All above
答案: 【 Alkaline】
6、判断题：
In the experiment of purification of sodium chloride, the filtrate was evaporated, concentrated and evaporated to dryness, and then the purified sodium chloride was obtained.
选项：
A: 正确
B: 错误
答案: 【 错误】
7、判断题：
When using the tray balance to weigh the reagents, the objects should be placed on the left and the weights should be placed on the right.
选项：
A: 正确
B: 错误
答案: 【 正确】
8、判断题：
In the experiment of puri