are soluble in water b] which are 12. If 'X' 8. of potassium nitrate is added to 100 g. of water at 60°C and the salt dissolves completely then - a) is 'X' g. the solubility of potassium nitrate at 60°C. b) is the solution formed - saturated or unsaturated c] if on adding 'X' + 'Y' g. of potassium nitrate to the same amount of water at the same temperature & the solute now just remains behind after stirring then - d) is the solution now - saturated or unsaturated e) is 'X' + 'Y' g. the solubility of potassium nitrate Thor the following statements are true or false. If false write the correct statement.
Answers
Like sugar and salt, some pesticides are very soluble in water. They dissolve easily. Their molecules bond to water molecules. Highly soluble pesticides will travel with water as it moves in the environment.
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Water Solubility.
Low water solubility: less than 10 mg/L or 10 ppm1
Moderate water solubility: 10-1,000 mg/L or 10-1,000 ppm1
High water solubility: more than 1,000 mg/L or 1,000 ppm1
Add X g of solute i.e. potassium nitrate to 100g of water 60
∘
C.
1. Stir the solute i.e. potassium nitrate in water thoroughly.
2. X g of the solute completely dissolves in water.
3. Add more solute and again stir thoroughly.
4. The solute continues to dissolves.
5. Water i.e. the solvent can dissolve more of the solute at the given temperature.
Add more solute to water till on adding an amount X+Y g. of the solute i.e. potassium nitrate to 100g of water at 60
∘
C.
The solute just remains behind after stirring.
The solution is now saturated.
Solution: When 'X' g of potassium nitrate is added to 100 g of water, and stirred well at 60°C. 'X' g of solute dissolves completely in water, so more solute will be added and again stirred thoroughly. The solute continues to dissolve, hence the solution is unsaturated.
How can you tell if a solution is saturated or unsaturated? If more solute is added and it does not dissolve, then the original solution was saturated. If the added solute dissolves, then the original solution was unsaturated.
Answer:
Like sugar and salt, some pesticides are very soluble in water. They dissolve easily. Their molecules bond to water molecules. Highly soluble pesticides will travel with water as it moves in the environment.
...
Water Solubility.
Low water solubility: less than 10 mg/L or 10 ppm1
Moderate water solubility: 10-1,000 mg/L or 10-1,000 ppm1
High water solubility: more than 1,000 mg/L or 1,000 ppm1
Add X g of solute i.e. potassium nitrate to 100g of water 60
∘
C.
1. Stir the solute i.e. potassium nitrate in water thoroughly.
2. X g of the solute completely dissolves in water.
3. Add more solute and again stir thoroughly.
4. The solute continues to dissolves.
5. Water i.e. the solvent can
Explanation:
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