Net Ionic Equations

Front

What is a net ionic equation?

Back

A net ionic equation shows only the species that actually participate in a chemical reaction, omitting the spectator ions.

Front

What is a precipitate?

Back

A precipitate is an insoluble solid that forms when two aqueous solutions are mixed.

Front

What is the oxidation state of an element?

Back

The oxidation state (or oxidation number) is a measure of the degree of oxidation of an atom in a compound.

Front

How do you determine the oxidation state of an element in a compound?

Back

Use rules such as the oxidation state of free elements is zero, the oxidation state of monoatomic ions is equal to their charge, and the sum of oxidation states in a neutral compound is zero.

Front

What is the role of spectator ions in a reaction?

Back

Spectator ions are ions that do not participate in the actual chemical reaction and remain unchanged.

Front

What happens when lead (II) nitrate reacts with sodium chloride?

Back

Lead (II) chloride precipitate forms as a result of the reaction.

Front

What is the oxidation number of chromium in Cr2O7^2-?

Back

+6.

Front

What is the significance of balancing chemical equations?

Back

Balancing chemical equations ensures that the law of conservation of mass is obeyed, meaning the number of atoms of each element is the same on both sides of the equation.

Front

What is the result of mixing potassium bromide and ammonium sulfide?

Back

No precipitate is formed.

Front

Which reaction produces a precipitate: AgNO3(aq) + NaOH(aq) or NaNO3(aq) + KOH(aq)?

Back

AgNO3(aq) + NaOH(aq) produces a precipitate.