2.1 Acid–base reactions

Multiple Choice

Why is it important to understand acid-base reactions in everyday life?

• Because they help us understand how medicines like antacids work

• Because they are only relevant in laboratory experiments

• Because acids and bases are dangerous and should be avoided

• Because they are not found in nature

Open Ended

Explain how neutralization reactions can be used to relieve the pain caused by a wasp sting.

Multiple Choice

Which of the following is a result of a neutralization reaction between an acid and a base?

• Water and salt are produced

• Only water is produced

• Only salt is produced

• Carbon dioxide is always produced

Multiple Select

Identify which statements about neutralization are true. 

• An equal number of hydrogen ions and hydroxide ions combine to form water.

• If there are more hydrogen ions than hydroxide ions, some water will be made but the solution will still be slightly acidic

• Water and oxygen gas are produced

Multiple Choice

Which of the following substances are produced when hydrochloric acid reacts with sodium hydroxide?

• Water and sodium chloride

• Water and carbon dioxide

• Sodium acetate and carbon dioxide

• Hydrogen gas and sodium chloride

Multiple Choice

Joni has a pot plant that won't grow. She discovers that the soil is too basic for the plant.

Determine what she should add to the soil to neutralize the pH.

• Calcium oxide (basic)

• Sulfur (acidic)

• Distilled water (neutral)

Multiple Choice

Examine the diagram above of the reaction between hydrochloric acid and sodium hydroxide.

Compare the number of hydrogen, oxygen, chlorine and sodium atoms on either side of the equation.

• There are the same numbers of each atom on either side of the equation

• There are more hydrogen atoms on the right hand side of the equation

Multiple Choice

Identify the chemical equation for the neutralization reaction between hydrochloric acid and sodium hydroxide.

• HCl + NaOH → H₂0 + NaCl

• HCl + NaOH → ClOH + NaO

• H₂0 + NaOH → HCl + NaCl

Multiple Choice

What are the products of the reaction between acetic acid and sodium bicarbonate?

• Water, sodium acetate, and carbon dioxide

• Water and sodium chloride

• Water and hydrogen gas

• Salt and oxygen

Multiple Choice

How do antacid tablets help relieve heartburn?

• By increasing stomach acid

• By neutralizing stomach acid

• By producing more bile

• By absorbing stomach acid

Open Ended

The shells of many marine creatures are made from calcium carbonate.

Explain why these shells will start to dissolve if the ocean becomes too acidic.