Question

英文化学题解答！！感激不敬~~

1. a. What is the maximum mass of KCI that can be dissolved in each 100g of water? If the temperature of the water is 60 ℃

b. a solution is made by dissolving 55g of KNO3 in 100g of water at 60 ℃. Is this solution saturated, unsaturated, or supersaturated?

c. what is the relationship between temperature and solubility for KNO3 ?

2. to which part of a water molecule would Li+ be attracted CI- ?

3. Draw a model of an unsaturated solution of NaCI in water.

4. How could diluting the solution in question 6 change your model?

5. . a solution contain 2.7g of sulfate in 75 of solution. What is the solution concentration, expressed as a percent copper sulfate by mass?
__________________%CuCO4

6. What is the concentration of the following solution expressed as ppm?
0.050g of selenium ions dissolved in 200g of water.
__________________ppm Se2+

Answer 1

1。答：什么是氯化钾最大质量，可在每100克水溶解？如果水的温度为60℃

湾一个解决方案是由溶解在60℃，在水100克硝酸钾55克。此解决方案是饱和，不饱和或过饱和？

角什么是与温度和溶解度的硝酸钾的关系？

2。对于这些水分子的部分将锂离子被吸引的CI -？

3。画出一个不饱和的氯化钠水溶液模型。

4。怎么能在问题6稀释改变你的模型的解决方案？

5。 。一个解决方案包含在硫酸溶液75二点七克。什么是溶液的浓度，以质量分数为硫酸铜表达？
__________________% CuCO4

6。什么是表达以下为百万分之浓度？
硒离子0.050克溶解于水200克。
__________________ppm Se2 +