1.How many grams of ammonium chloride (NH4Cl) can be dissolved in 200 grams of w

Question

1.How many grams of ammonium chloride (NH4Cl) can be dissolved in 200 grams of water at 90°C? Show calculation.

2.At 50°C, 80 g of KNO3 is dissolved in 100 g of water. Is this solution unsaturated, saturated, or supersaturated? Explain

3.A saturated solution of KCl is cooled from 80°C to 10°C. How many grams of KCl precipitate out of solution?  

4. A soft drink is made by dissolving CO2 gas at 3.60 atm in a flavored solution and sealing the solution in aluminum cans at 20.°C. What amount (in grams) of CO2 is contained in a 420-mL can of the soft drink? At 20.°C, the Henry’s law constant for CO2 is 2.3 x 10-2 mole.L-1.atm-1.

5. A solution is prepared by dissolving 13.63 g of sucrose (C12H22O11) in 612 g of water. The final volume of the solution is 635 mL.

For this solution, calculated the concentration in each unit indicated below.

a.Molarity

b.Molality

c.Mole fraction of glucose

Explanation / Answer

1.
From graph given,
At 90 oC, saturated solution of NH4Cl can contain 70 g solute per 100 g H2O

Here mass of water = 200 g

SInce 100 g can dissolve 70 g of NH4Cl
200 g will be able to dissolve = 70*200/100 = 140 g of NH4Cl
Answer: 140 g

2.
From graph given,
At 50 oC, saturated solution of KNO3 can contain 80 g solute per 100 g H2O

We have also dissolved 80 g of KNO3 in 100 g of water

So solution is saturated

3.
From graph given,
At 80 oC, saturated solution of KNO3 can contain 50 g solute per 100 g H2O

From graph given,
At 10 oC, saturated solution of KNO3 can contain 30 g solute per 100 g H2O

So 50-30 = 20 g of KNO3 will precipitate out

we are allowed to answer only 1 question at a time. Rest of the questions are not related to question 1 to 3 above. Hence they are different question and can't be answered at once
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Please let me know if you face any problem ain question 1 to 3 that I have answered

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