Solubility of Copper(II) Compounds

The video tutorial explores whether copper(II) sulfate (CuSO4) is soluble in water. It confirms that CuSO4 is soluble by examining solubility rules, using a solubility chart, and conducting a practical test. The tutorial explains that most sulfates are soluble, with copper(II) sulfate being no exception. It demonstrates how to use a solubility chart to identify the solubility of compounds and describes the dissociation of CuSO4 into Cu2+ and SO4 2- ions in water.

What is the solubility status of Copper(II) Sulfate in water?

• Soluble

• Insoluble

• Not enough information

• Partially soluble

According to solubility rules, which of the following is true about most sulfates?

• They are only soluble in cold water

• They are soluble

• They are insoluble

• They are only soluble in hot water

Which ion is paired with Copper(II) in the solubility chart?

• NO3-

• OH-

• Cl-

• SO4 2-

What is the role of the solubility chart in determining solubility?

• It predicts the color change

• It measures the pH level

• It shows the temperature required for solubility

• It indicates the solubility status of compounds

What happens to Copper(II) Sulfate when it is dissolved in water?

• It forms a precipitate

• It remains unchanged

• It dissociates into ions

• It evaporates

What is the charge on the Copper ion when Copper(II) Sulfate dissociates in water?

• 1+

• 2+

• 3+

• 0

Why must Copper(II) have a 2+ charge in Copper(II) Sulfate?

• To make it insoluble

• To balance the 2- charge of the sulfate ion

• To increase its weight

• To change its color

Which method can be used to practically test the solubility of Copper(II) Sulfate?

• Mixing it with oil

• Placing it in water

• Freezing it

• Heating it

What is the expected outcome when Copper(II) Sulfate is placed in water according to the solubility chart?

• It will change color

• It will not dissolve

• It will dissolve and form a solution

• It will form a gas