Chemical Reactions and Equations

The video tutorial explains the reaction between phosphoric acid (H3PO4) and sodium hydroxide (NaOH), identifying it as a neutralization and double replacement reaction. It describes the characteristics of acids and bases, emphasizing the importance of memorizing common acids and bases. The tutorial also covers the process of balancing the chemical equation for the reaction, resulting in the formation of water and sodium phosphate.

What are the reactants in the reaction discussed in the video?

• H2O and NaCl

• NaOH and HCl

• H2SO4 and NaOH

• H3PO4 and NaOH

What type of reaction occurs when an acid reacts with a base?

• Decomposition

• Synthesis

• Neutralization

• Combustion

Which of the following is a characteristic of a base?

• Contains a non-metal bonded to OH

• Contains a non-metal bonded to H

• Contains a metal bonded to OH

• Contains a metal bonded to H

What is the pattern for a neutralization reaction?

• Acid and base give salt and water

• Base and metal give salt and water

• Acid and non-metal give salt and water

• Acid and metal give salt and hydrogen

In a double replacement reaction, what happens to the ions?

• They change places

• They form a gas

• They remain unchanged

• They are destroyed

What is the product formed when hydrogen ions combine with hydroxide ions?

• NaOH

• NaCl

• H2O

• HCl

What is the chemical formula for sodium phosphate?

• Na4PO4

• NaPO4

• Na2PO4

• Na3PO4

Why is it important to balance a chemical equation?

• To increase the temperature of the reaction

• To make the reaction colorful

• To satisfy the law of conservation of mass

• To ensure the reaction is fast

How many sodium hydroxide molecules are needed to balance the equation with phosphoric acid?

• Three

• Two

• Four

• One

What type of reaction is the combination of phosphoric acid and sodium hydroxide?

• Synthesis

• Combustion

• Single displacement

• Double displacement and neutralization