Balancing Chemical Equations Concepts

The video tutorial explains how to balance the chemical equation for GaBr3 and Na2SO3, focusing on the use of polyatomic ions like sulfite. It demonstrates the balancing process by adjusting coefficients to equalize the number of atoms on both sides of the equation. The tutorial also describes the double displacement reaction, where gallium and sodium switch partners, and discusses the solubility of the resulting compounds, identifying gallium sulfite as a precipitate.

What is the initial chemical equation that needs to be balanced?

• Ga2Br6 + Na2SO3

• GaBr + Na2SO3

• GaBr3 + Na2SO3

• GaBr3 + NaSO3

What is the role of the sulfite ion in the equation?

• It is split into sulfur and oxygen for balancing.

• It is only present on the reactant side.

• It is treated as a single unit on both sides of the equation.

• It is ignored in the balancing process.

How many gallium atoms are needed on the product side to balance the equation?

• Three

• Two

• One

• Four

What coefficient is used in front of NaBr to balance the bromine atoms?

• 8

• 4

• 2

• 6

How many sodium atoms are present on the reactant side after balancing?

• Four

• Six

• Eight

• Two

What is the purpose of using coefficients in balancing chemical equations?

• To increase the reaction rate.

• To ensure the same number of each type of atom on both sides of the equation.

• To change the chemical properties of the reactants.

• To decrease the energy required for the reaction.

What type of chemical reaction is demonstrated in this equation?

• Double displacement

• Single displacement

• Decomposition

• Synthesis

Which product is likely to be a precipitate in this reaction?

• Sodium sulfite

• Gallium bromide

• Gallium sulfite

• Sodium bromide

What is the state of gallium sulfite in the reaction?

• Gas

• Aqueous

• Liquid

• Solid

What happens to the sodium ions in the reaction?

• They bond with bromine.

• They remain bonded to sulfite.

• They form a new compound with gallium.

• They are released as a gas.