Copper II Chloride Solubility Concepts

The video tutorial explores whether copper II chloride (CuCl2) is soluble in water. It confirms that CuCl2 is soluble by discussing three methods: memorizing solubility rules, using a solubility chart, and practical verification. The solubility rules indicate that chloride compounds are generally soluble, with few exceptions, and copper is not one of them. The solubility chart further supports this by showing that CuCl2 dissociates into ions in water. Finally, a practical test by dissolving CuCl2 crystals in water confirms its solubility. The video concludes with a summary of these findings.

What is the main question addressed in the video regarding Copper II Chloride?

• Whether it is reactive with acids

• Whether it is used in batteries

• Whether it is soluble or insoluble in water

• Whether it is a metal or non-metal

According to solubility rules, which ions generally form soluble compounds?

• Sulfate ions

• Chloride, bromide, and iodide ions

• Carbonate ions

• Phosphate ions

Which of the following is NOT an exception to the solubility of chloride ions?

• Copper

• Mercury

• Lead

• Silver

What does the 'S' indicate on a solubility chart?

• The compound is insoluble

• The compound is soluble

• The compound is a solid

• The compound is stable

Where are the positive ions located on a solubility chart?

• On the bottom

• On the top

• On the left

• On the right

What happens to Copper II Chloride when it is dissolved in water?

• It forms a precipitate

• It remains unchanged

• It dissociates into ions

• It evaporates

What ions are formed when Copper II Chloride dissociates in water?

• Chloride ions and nitrate ions

• Copper ions and phosphate ions

• Copper ions and chloride ions

• Copper ions and sulfate ions

Why must the copper ion in Copper II Chloride be 2+?

• To make it insoluble

• Because it is a transition metal

• Because it is a metal

• To balance the charge of two chloride ions

What is a practical way to verify the solubility of Copper II Chloride?

• Freezing it

• Dissolving it in water

• Mixing it with oil

• Heating it

What should happen to Copper II Chloride when placed in water, according to the video?

• It should sink

• It should change color

• It should float

• It should dissolve