Net Ionic Equations and Ions

The video tutorial explains how to write the net ionic equation for the reaction between calcium hydroxide and hydrochloric acid. It begins with writing a balanced molecular equation, identifying the states of substances, and then splitting them into ions to form the complete ionic equation. Spectator ions are identified and canceled out to derive the net ionic equation. The tutorial concludes by simplifying the equation to a 1:1:1 ratio.

What is the first step in writing a net ionic equation?

• Identify spectator ions

• Write the balanced molecular equation

• Split substances into ions

• Determine the states of substances

What state is calcium hydroxide likely to be in?

• Liquid

• Aqueous

• Solid

• Gas

Which ion has a 2+ charge in the reaction?

• Hydroxide

• Chloride

• Calcium

• Hydrogen

What is the charge of the hydroxide ion?

• 1+

• 2+

• 1-

• 2-

What is the charge of the chloride ion?

• 1-

• 1+

• 2-

• 2+

Which group on the periodic table does hydrogen belong to?

• Group 1

• Group 7A

• Group 2

• Group 17

What do you call ions that appear on both sides of the equation?

• Spectator ions

• Reactant ions

• Net ions

• Product ions

Which ions are canceled out to form the net ionic equation?

• Calcium and hydroxide

• Hydrogen and chloride

• Calcium and chloride

• Hydroxide and hydrogen

What is the final step in simplifying the net ionic equation?

• Add coefficients

• Remove spectator ions

• Reduce to simplest ratio

• Balance charges

What is the net ionic equation for the reaction between calcium hydroxide and hydrochloric acid?

• Ca(OH)2 + 2HCl → CaCl2 + 2H2O

• Ca2+ + 2OH- + 2H+ + 2Cl- → Ca2+ + 2Cl- + 2H2O

• 2OH- + 2H+ → 2H2O

• Ca2+ + 2OH- → Ca(OH)2