Lab 5- Solubility Product

Question 1

Define Salt

Answer 1

An ionic compound, often comprised of a metal and a nonmetal.

Question 2

Under what conditions will a salt be considered soluble?

Answer 2

If it’s concentration is greater than or equal to 0.1M

Question 3

Under what conditions will a salt be considered slightly soluble?

Answer 3

If it’s concentration is between 0.01 and 0.1M

Question 4

Under what conditions will a salt be considered insoluble?

Answer 4

When its concentration is less than 0.1M

Question 5

What is the solubility of Lead Iodide at 20 degrees Celsius?

Answer 5

Less than 0.002 mol/L

Question 6

How will the solubility of the lead iodide be measured in the experiment?

Answer 6

After spectrophotometrically measuring the molar solubility.

Question 7

What is the purpose of KNO3 and KNO2 respectively?

Answer 7

KNO3 is an inert electrolyte that does not participate in any reactions and serves mainly to maintain a constant ionic strength in various solutions.

KNO2 acts to oxidize the iodide ion (I-) to I2.