Chemical Reactions: Acids, bases, metals, and metal carbonates

What is the general word equation for an acid reacting with a base?

• Acid + Base → Salt + Water

• Acid + Base → Salt + Hydrogen

• Acid + Base → Metal + Water

• Acid + Base → Carbon dioxide + Water

Answer explanation

The correct word equation for an acid reacting with a base is 'Acid + Base → Salt + Water'. This reaction is known as neutralisation, where the acid and base produce a salt and water as products.

What is the word equation for the reaction of an acid with a metal?

• Acid + Metal → Salt + Water

• Acid + Metal → Salt + Hydrogen

• Acid + Metal → Metal oxide + Water

• Acid + Metal → Carbon dioxide + Water

Answer explanation

The correct word equation for the reaction of an acid with a metal is 'Acid + Metal → Salt + Hydrogen'. This reaction produces a salt and hydrogen gas, which is released as bubbles.

What is the general word equation for the reaction of an acid with a metal carbonate?

• Acid + Metal carbonate → Salt + Water + Carbon dioxide

• Acid + Metal carbonate → Salt + Hydrogen

• Acid + Metal carbonate → Metal oxide + Water

• Acid + Metal carbonate → Salt + Oxygen

Answer explanation

The correct word equation for the reaction of an acid with a metal carbonate is 'Acid + Metal carbonate → Salt + Water + Carbon dioxide'. This reaction produces a salt, water, and carbon dioxide gas.

Which of the following is the word equation for the reaction between hydrochloric acid and sodium hydroxide?

• Hydrochloric acid + Sodium hydroxide → Sodium chloride + Water

• Hydrochloric acid + Sodium hydroxide → Sodium carbonate + Water

• Hydrochloric acid + Sodium hydroxide → Sodium sulphate + Water

• Hydrochloric acid + Sodium hydroxide → Sodium nitrate + Water

Answer explanation

The correct word equation for the reaction between hydrochloric acid and sodium hydroxide is: Hydrochloric acid + Sodium hydroxide → Sodium chloride + Water. This represents a neutralisation reaction producing salt and water.

Which of the following is the word equation for the reaction between sulfuric acid and zinc?

• Sulfuric acid + Zinc → Zinc sulphate + Hydrogen

• Sulfuric acid + Zinc → Zinc chloride + Hydrogen

• Sulfuric acid + Zinc → Zinc nitrate + Hydrogen

• Sulfuric acid + Zinc → Zinc carbonate + Hydrogen

Answer explanation

The correct word equation for the reaction between sulphuric acid and zinc is: Sulfuric acid + Zinc → Zinc sulfate + Hydrogen. This reaction produces zinc sulfate and hydrogen gas, not the other compounds listed.

Which of the following is the word equation for the reaction between nitric acid and calcium carbonate?

• Nitric acid + Calcium carbonate → Calcium nitrate + Water + Carbon dioxide

• Nitric acid + Calcium carbonate → Calcium chloride + Water + Carbon dioxide

• Nitric acid + Calcium carbonate → Calcium sulphate + Water + Carbon dioxide

• Nitric acid + Calcium carbonate → Calcium oxide + Water + Carbon dioxide

Answer explanation

The correct word equation for the reaction between nitric acid and calcium carbonate is: Nitric acid + Calcium carbonate → Calcium nitrate + Water + Carbon dioxide. This reflects the products formed in the reaction.

What is the word equation for the reaction of hydrochloric acid with magnesium?

• Hydrochloric acid + Magnesium → Magnesium chloride + Hydrogen

• Hydrochloric acid + Magnesium → Magnesium sulphate + Hydrogen

• Hydrochloric acid + Magnesium → Magnesium nitrate + Hydrogen

• Hydrochloric acid + Magnesium → Magnesium carbonate + Hydrogen

Answer explanation

The correct word equation for the reaction of hydrochloric acid with magnesium is: Hydrochloric acid + Magnesium → Magnesium chloride + Hydrogen. This reaction produces magnesium chloride and hydrogen gas.

Which of the following is the word equation for the reaction between phosphoric acid and potassium hydroxide?

• Phosphoric acid + Potassium hydroxide → Potassium phosphate + Water

• Phosphoric acid + Potassium hydroxide → Potassium chloride + Water

• Phosphoric acid + Potassium hydroxide → Potassium sulphate + Water

• Phosphoric acid + Potassium hydroxide → Potassium nitrate + Water

Answer explanation

The correct word equation for the reaction between phosphoric acid and potassium hydroxide is: Phosphoric acid + Potassium hydroxide → Potassium phosphate + Water. This represents the neutralisation reaction forming a salt and water.

What is the word equation for the reaction of nitric acid with iron?

• Nitric acid + Iron → Iron nitrate + Hydrogen

• Nitric acid + Iron → Iron chloride + Hydrogen

• Nitric acid + Iron → Iron sulphate + Hydrogen

• Nitric acid + Iron → Iron carbonate + Hydrogen

Answer explanation

The correct reaction of nitric acid with iron produces iron nitrate and hydrogen gas. The other options incorrectly list products that do not form in this reaction.

What is the word equation for the reaction of acetic acid with zinc?

• Acetic acid + Zinc → Zinc acetate + Hydrogen

• Acetic acid + Zinc → Zinc chloride + Hydrogen

• Acetic acid + Zinc → Zinc sulphate + Hydrogen

• Acetic acid + Zinc → Zinc nitrate + Hydrogen

Answer explanation

The correct reaction of acetic acid with zinc produces zinc acetate and hydrogen gas. The other options incorrectly pair zinc with different anions, which do not form in this reaction.