Understanding Dissociation Equations for Strong Electrolytes

Melissa Maribel assists Michele in understanding how to write dissociation equations for strong electrolytes. The session covers the definition of strong electrolytes, their complete dissociation into ions, and examples including strong acids like HCl and salts like NaCl. The discussion also touches on ionic compounds, polyatomic ions, and the importance of knowing charges and subscripts. Finally, Melissa guides Michele through writing a dissociation equation for cobalt chloride, emphasizing the identification of metal and nonmetal components and their respective charges.

What is a characteristic of strong electrolytes?

• They partially dissociate in solution.

• They do not dissociate in solution.

• They completely dissociate into ions.

• They form covalent bonds in solution.

Which of the following is an example of a strong acid?

• CH4

• NH3

• HCl

• H2O

What ions are formed when HCl dissociates?

• H+ and Cl2

• H2 and Cl2

• H+ and Cl-

• H2O and Cl2

What is the charge on the sodium ion in NaCl?

• 1-

• 1+

• 2+

• 0

How many nitrate ions are present in Ca(NO3)2?

• 1

• 2

• 3

• 4

What is the charge on a nitrate ion?

• 1+

• 1-

• 2-

• 2+

What is the charge of cobalt in CoCl3?

• 3+

• 1+

• 2+

• 4+

How many chlorine ions are present in CoCl3?

• 4

• 3

• 2

• 1

What is the charge on a chlorine ion?

• 1+

• 2-

• 1-

• 2+

How can you determine the charge of cobalt in CoCl3?

• By the smell of the compound.

• By the color of the compound.

• By the subscript of chlorine in the formula.

• By looking at the periodic table.