Cobalt Chloride and Its Properties

The video tutorial explains how to write the formula for Cobalt 2 Chloride Hexahydrate. It begins with an introduction to the compound, highlighting the difference between its anhydrous and hexahydrate forms. The tutorial then guides viewers through the process of writing the chemical formula, emphasizing the importance of balancing ionic charges. The final formula is presented as CoCl2·6H2O, with a brief conclusion summarizing the key points.

What does the term 'hexahydrate' indicate in Cobalt 2 Chloride Hexahydrate?

• Presence of six oxygen atoms

• Presence of six cobalt atoms

• Presence of six water molecules

• Presence of six chlorine atoms

What is the color of anhydrous cobalt chloride?

• Green

• Light blue

• Red

• Purple

How does the color of Cobalt 2 Chloride Hexahydrate differ from its anhydrous form?

• It is green

• It is purple

• It is yellow

• It is red

What is the ionic charge of cobalt in Cobalt 2 Chloride?

• 4+

• 3+

• 2+

• 1+

Which group does chlorine belong to in the periodic table?

• Group 7A

• Group 3

• Group 1

• Group 5A

How many chlorine atoms are needed to balance the charge of cobalt in Cobalt 2 Chloride?

• Four

• Three

• Two

• One

What does the 'dot' represent in the formula of Cobalt 2 Chloride Hexahydrate?

• A bond between water molecules

• A separation between cobalt and water molecules

• A bond between cobalt and chlorine

• A separation between chlorine atoms

What is the chemical formula for water?

• H2

• O2

• CO2

• H2O

What is the complete formula for Cobalt 2 Chloride Hexahydrate?

• CoCl·6H2O

• Co2Cl·6H2O

• CoCl2·6H2O

• CoCl2