Solubility of Sodium Chloride Mass of beaker with NaCl (after evaporation of wat

Question

Solubility of Sodium Chloride

Mass of beaker with NaCl (after evaporation of water)

1. What is the Ksp of NaCl based on your data?

2. Calculate the [Na+]. Show your calculations.

3. Create an “ICE” table using the correct form of the equation for solubility of sodium chloride. Include the values for the solubility of [Na+] and [Cl-] (do not use “x”, use the number calculated in this post-lab).

4. You calculated the Ksp of sodium chloride in the pre-lab.

a. Write that number here:

5. What was the effect of adding sodium hydroxide on the solubility of sodium chloride? How do you know?

6. What was the effect of adding iron(III) nitrate on the solubility of sodium chloride? How do you know?

Mass of empty beaker 50.13

Mass of beaker with NaCl (after evaporation of water)

55.98 Mass of NaCl 5.85 Moles NaCl Volume of solution (in liters) 0.010L Moles NaCl/Liter water

Explanation / Answer

Q1.

For Ksp:

Ksp = [Na+][Cl-]

find [NaCl] = mol of NACl/ Volume

mol of NACl = mass/MW = 5.85/58.44 = 0.10010 mol of NACl

V = 0.01 L

so

M = mol/V = 0.10010/0.01 = 10.01 M

so

Ksp = [Na+][Cl-] = (10.01)(10.01) = 100.2001

Q2.

From previous data...

[Na+] = 10.01 M

Q4.

Ksp NACl real = 36.85

so

%error = (36.85 -100.2))/36.85 *100 = 171.9131% error

Q5

Adding NAOH to the mix will increa [Na+] ions, so....

Ksp = [Na+][Cl-]

if Na+ increases, solubility of NaCl will decrease since it is saturated

Q6

Fe+3 and NO3- will be present

No effect will be seen

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.