Reaction of Metals and Acids

Question 2

What is the general equation of the reaction of metal with an acid?

Answer 2

Acid + Metal = Salt + Hydrogen Gas

Question 3

What are the two common acids? How do they react with metals above hydrogen?

Answer 3

The two common acids are sulfuric acid (H2SO4) and hydrochloric acid (HCl).

Metal + Dil. H2SO4 -> Metal Sulphate
Metal + Dil. HCl -> Metal Chloride

Question 4

What some of the most active metals? What are some of the most inactive metals?

Answer 4

The most active metals are magnesium, zinc, iron and lead.
The most inactive metal are copper, silver and gold.

Question 5

List some examples of acid-metal chemical reactions.

Answer 5

Examples of acid-metal chemical reactions -
1. Magnesium + Hydrochloric Acid = Magnesium Chloride + Hydrogen gas
2. Magnesium + Sulphuric Acid = Magnesium Sulphate + Hydrogen Gas
3. Iron + Sulphuric Acid = Iron sulphate + Hydrogen gas
4. Zinc + Hydrochloric Acid = Zinc Chloride + Hydrogen Gas

Question 6

How do diluted acids react with potassium, sodium, lithium and calcium?

Answer 6

Potassium, sodium, lithium and calcium react with diluted acids too violently to perform in a lab. It is explosive.

Question 7

How do diluted acids react with magnesium?

Answer 7

Magnesium reacts vigorously with diluted acids. There is fizzing during the reaction and the test tube gets hot.

Question 8

How do diluted acids react with zinc?

Answer 8

Zinc has a steady reaction with diluted acids. The test tube gets warmer, but not as hot as magnesium.

Question 9

How do diluted acids react with iron?

Answer 9

Iron has a slow reaction with diluted acids. The test tube gets warm, but not as warm as zinc.

Question 10

How do diluted acids react with hydrogen, copper, silver, gold?

Answer 10

Hydrogen, copper, silver and gold have no reaction with diluted acids.

Question 11

What do metals that react with dilute acids form?

Answer 11

Metals that react with diluted acids form -
- A compound that dissolves in water
- Hydrogen gas