Net Ionic Equations and Solubility

The video tutorial explains how to write the net ionic equation for the reaction between calcium nitrate and sodium sulfate. It begins by balancing the molecular equation and determining the solubility of the reactants and products. The tutorial then demonstrates how to split strong electrolytes into ions and identify spectator ions. Finally, it formulates the net ionic equation and checks for balance in terms of charges and atoms.

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

• Identify spectator ions

• Balance the molecular equation

• Determine the solubility of products

• Split strong electrolytes into ions

Which of the following is typically soluble in water?

• Silver bromide

• Sodium compounds

• Lead chloride

• Calcium sulfate

What does 'ss' indicate in a solubility table?

• Saturated solution

• Strongly soluble

• Slightly soluble

• Solid state

What charge does calcium have when split into ions?

• 2-

• 1-

• 2+

• 1+

What is the charge of the sulfate ion?

• 1+

• 2-

• 2+

• 1-

Why are solids not split in net ionic equations?

• They are not reactive

• They do not dissolve in water

• They are spectator ions

• They are already balanced

What is the role of spectator ions in a chemical reaction?

• They participate in the reaction

• They change state during the reaction

• They remain unchanged

• They form new compounds

Which ions are crossed out when writing the net ionic equation?

• Ions that appear only in reactants

• Ions that appear on both sides

• Ions that are solids

• Ions that appear only in products

What should be checked to ensure the net ionic equation is correct?

• The color of the solution

• The temperature of the reaction

• The balance of charges and atoms

• The pH level

What is the correct net ionic equation for the reaction between calcium nitrate and sodium sulfate?

• Na2+ + SO4 2- → Na2SO4

• Ca2+ + 2NO3- → Ca(NO3)2

• Na+ + NO3- → NaNO3

• Ca2+ + SO4 2- → CaSO4