Free Printable Solubility Curve Worksheets - Free Printable
Educational worksheet: Free Printable Solubility Curve Worksheets. Download and print for classroom or home learning activities.
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Step-by-step solution for: Free Printable Solubility Curve Worksheets
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Show Answer Key & Explanations
Step-by-step solution for: Free Printable Solubility Curve Worksheets
To solve the problems using the solubility curve provided, let's address each question step by step.
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- Locate the temperature of 50°C on the x-axis.
- Follow the vertical line up to the NH₄Cl curve.
- Read the corresponding value on the y-axis (amount of solute per 100 g of water).
From the graph:
- At 50°C, the solubility of NH₄Cl is approximately 40 g.
Answer: 40 g
---
- Locate the temperature of 78°C on the x-axis.
- Identify two curves that intersect or are at the same y-value at this temperature.
From the graph:
- At 78°C, the solubility curves for KNO₃ and NaNO₃ intersect or are very close.
Answer: KNO₃ and NaNO₃
---
- Locate the temperature of 10°C on the x-axis.
- Compare the y-values (solubility) of all compounds at this temperature.
From the graph:
- At 10°C, Ce₂(SO₄)₃ has the lowest solubility, around 10 g.
Answer: Ce₂(SO₄)₃
---
- Locate the temperature of 50°C on the x-axis.
- Follow the vertical line up to the KNO₃ curve.
- Read the corresponding value on the y-axis.
From the graph:
- At 50°C, the solubility of KNO₃ is approximately 90 g.
Answer: 90 g
---
#### a. 45 g of NaNO₃ in 100 g of water at 30°C.
- Locate 30°C on the x-axis.
- Find the solubility of NaNO₃ at this temperature.
- Compare 45 g with the solubility value.
From the graph:
- At 30°C, the solubility of NaNO₃ is approximately 60 g.
- Since 45 g < 60 g, the solution is unsaturated.
#### b. 60 g of KClO₃ in 100 g of water at 90°C.
- Locate 90°C on the x-axis.
- Find the solubility of KClO₃ at this temperature.
- Compare 60 g with the solubility value.
From the graph:
- At 90°C, the solubility of KClO₃ is approximately 40 g.
- Since 60 g > 40 g, the solution is supersaturated.
Answers:
- a. Unsaturated
- b. Supersaturated
---
- Locate the temperature of 30°C on the x-axis.
- Follow the vertical line up to the KNO₃ curve.
- Read the corresponding value on the y-axis.
From the graph:
- At 30°C, the solubility of KNO₃ is approximately 60 g.
Answer: 60 g
---
- Locate the temperature of 45°C on the x-axis.
- Find the solubility of NH₃ at this temperature.
- The solubility given is per 100 g of water. Multiply by 2 to find the amount for 200 g of water.
From the graph:
- At 45°C, the solubility of NH₃ is approximately 30 g per 100 g of water.
- For 200 g of water: \( 30 \, \text{g} \times 2 = 60 \, \text{g} \).
Answer: 60 g
---
- Look for the intersection point of the NaCl and KCl curves.
- Read the corresponding temperature on the x-axis.
From the graph:
- The NaCl and KCl curves intersect at approximately 60°C.
Answer: 60°C
---
1. 40 g
2. KNO₃ and NaNO₃
3. Ce₂(SO₄)₃
4. 90 g
5. a. Unsaturated, b. Supersaturated
6. 60 g
7. 60 g
8. 60°C
Boxed Final Answer:
\[
\boxed{40, \text{KNO}_3 \text{ and NaNO}_3, \text{Ce}_2(\text{SO}_4)_3, 90, \text{Unsaturated, Supersaturated}, 60, 60, 60}
\]
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1. How many grams of ammonium chloride (NH₄Cl) at 50°C?
- Locate the temperature of 50°C on the x-axis.
- Follow the vertical line up to the NH₄Cl curve.
- Read the corresponding value on the y-axis (amount of solute per 100 g of water).
From the graph:
- At 50°C, the solubility of NH₄Cl is approximately 40 g.
Answer: 40 g
---
2. _______ and _______ have the same solubility at approximately 78°C.
- Locate the temperature of 78°C on the x-axis.
- Identify two curves that intersect or are at the same y-value at this temperature.
From the graph:
- At 78°C, the solubility curves for KNO₃ and NaNO₃ intersect or are very close.
Answer: KNO₃ and NaNO₃
---
3. Which compound is least soluble in water at 10°C?
- Locate the temperature of 10°C on the x-axis.
- Compare the y-values (solubility) of all compounds at this temperature.
From the graph:
- At 10°C, Ce₂(SO₄)₃ has the lowest solubility, around 10 g.
Answer: Ce₂(SO₄)₃
---
4. How many grams of KNO₃ can be dissolved at 50°C?
- Locate the temperature of 50°C on the x-axis.
- Follow the vertical line up to the KNO₃ curve.
- Read the corresponding value on the y-axis.
From the graph:
- At 50°C, the solubility of KNO₃ is approximately 90 g.
Answer: 90 g
---
5. Are the following solutions unsaturated, saturated, or supersaturated?
#### a. 45 g of NaNO₃ in 100 g of water at 30°C.
- Locate 30°C on the x-axis.
- Find the solubility of NaNO₃ at this temperature.
- Compare 45 g with the solubility value.
From the graph:
- At 30°C, the solubility of NaNO₃ is approximately 60 g.
- Since 45 g < 60 g, the solution is unsaturated.
#### b. 60 g of KClO₃ in 100 g of water at 90°C.
- Locate 90°C on the x-axis.
- Find the solubility of KClO₃ at this temperature.
- Compare 60 g with the solubility value.
From the graph:
- At 90°C, the solubility of KClO₃ is approximately 40 g.
- Since 60 g > 40 g, the solution is supersaturated.
Answers:
- a. Unsaturated
- b. Supersaturated
---
6. What is the solubility of potassium nitrate (KNO₃) at 30°C?
- Locate the temperature of 30°C on the x-axis.
- Follow the vertical line up to the KNO₃ curve.
- Read the corresponding value on the y-axis.
From the graph:
- At 30°C, the solubility of KNO₃ is approximately 60 g.
Answer: 60 g
---
7. How many grams of ammonia can I dissolve in 200 grams of water at a temperature of 45°C?
- Locate the temperature of 45°C on the x-axis.
- Find the solubility of NH₃ at this temperature.
- The solubility given is per 100 g of water. Multiply by 2 to find the amount for 200 g of water.
From the graph:
- At 45°C, the solubility of NH₃ is approximately 30 g per 100 g of water.
- For 200 g of water: \( 30 \, \text{g} \times 2 = 60 \, \text{g} \).
Answer: 60 g
---
8. At what temperature is sodium chloride's (NaCl) solubility the same as potassium chloride's (KCl)?
- Look for the intersection point of the NaCl and KCl curves.
- Read the corresponding temperature on the x-axis.
From the graph:
- The NaCl and KCl curves intersect at approximately 60°C.
Answer: 60°C
---
Final Answers:
1. 40 g
2. KNO₃ and NaNO₃
3. Ce₂(SO₄)₃
4. 90 g
5. a. Unsaturated, b. Supersaturated
6. 60 g
7. 60 g
8. 60°C
Boxed Final Answer:
\[
\boxed{40, \text{KNO}_3 \text{ and NaNO}_3, \text{Ce}_2(\text{SO}_4)_3, 90, \text{Unsaturated, Supersaturated}, 60, 60, 60}
\]
Parent Tip: Review the logic above to help your child master the concept of solubility chart worksheet.
