Reaction of acids

Reactions of Acids (Refer to pg 5 of Topic 9 notes)

Which of the following reaction is incorrect?

• Acids + Metal → Salt + Hydrogen gas

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

• Acids + Metal oxide → Salt + Carbon dioxide + Water

• Acids + Metal hydroxide → Salt + Water

We will go through with the easier 'WORD EQUATION' first >>>

What is the correct word equation from the reaction between Magnesium and Nitric acid?

• Magnesium and Nitric acid →

  Magnesium nitrate + Hydrogen gas

• Magnesium and Nitric acid →

  Magnesium sulfate + Hydrogen gas

• Magnesium and Nitric acid →

  Magnesium nitrate + Carbon dioxide + Hydrogen gas

• Magnesium and Nitric acid →

  Magnesium sulfate+ Carbon dioxide + Hydrogen gas

We will go through with the easier 'WORD EQUATION' first >>>

What is the correct word equation from the reaction between Sodium carbonate and Sulfuric acid?

• Sodium carbonate and Sulfuric acid → Sodium sulfate + Hydrogen gas

• Sodium carbonate and Sulfuric acid → Sodium sulfate + Carbon dioxide + Water

• Sodium carbonate and Sulfuric acid → Sodium sulfate + water

• Sodium carbonate and Sulfuric acid → Sodium sulfate + Hydrogen gas + Water

We will go through with the easier 'WORD EQUATION' first >>>

What is the correct word equation from the reaction between Magnesium oxide and Phosphoric acid?

• Magnesium oxide and Phosphoric acid → Magnesium phosphate + Hydrogen gas

• Magnesium oxide and Phosphoric acid → Magnesium phosphate + carbon dioxide + water

• Magnesium oxide and Phosphoric acid → Magnesium phosphate + water

• Magnesium oxide and Phosphoric acid → Magnesium phosphate + hydrogen gas + water

In order to write the chemical formula for the reaction of acids. You would need to know how to identify 1) metal, 2) metal carbonate, 3) metal oxide, and 4) metal hydroxide.

Example of metals are: Mg, K, Na, Pb

Which of the following are metals?

(you may choose more than one answer)

• Ag (silver)

• Si (silicon)

• Cl (chlorine)

• Fe (iron)

In order to write the chemical formula for the reaction of acids. You would need to know how to identify 1) metal, 2) metal carbonate, 3) metal oxide, and 4) metal hydroxide.

Example of METAL carbonates are: MgCO₃ , K₂CO₃ , Na₂CO₃

Which of the following are metal carbonates?

(you may choose more than one answer)

• CO₂

• H₂CO₃

• PbCO₃

• CuCO₃

In order to write the chemical formula for the reaction of acids. You would need to know how to identify 1) metal, 2) metal carbonate, 3) metal oxide, and 4) metal hydroxide.

Example of METAL oxide are: MgO , K₂O , Na₂O

Example of METAL hydroxide are: Mg(OH)₂ , KOH , NaOH

Which of the following are metal oxide and metal hydroxide?

(you may choose more than one answer)

• ZnO

• Na₂CO₃

• Fe(OH)₂

• MgPO₄

You are now ready to handle 'CHEMICAL EQUATIONS' !!!

(refer to reactions of acids in pg 5 of Topic 9 notes)

Which of the following is a correct chemical equation between Sodium hydroxide and sulfuric acid?

• NaOH + H₂SO₄ → Na₂SO₄ + H₂

• NaOH + H₂SO₄ → Na₂SO₄ + CO₂ + H₂O

• NaOH + H₂SO₄ → Na₂SO₄ + H₂ + H₂O

• NaOH + H₂SO₄ → Na₂SO₄ + H₂O

If you got it right, congratulations! If not, do try your best again.

Remember to identify which the acid is reacting to. Is it metal? metal carbonate? metal oxide or metal hydroxide?

(refer to reactions of acids in pg 5 of Topic 9 notes)

Which of the following is a correct chemical equation between Zinc and hydrochloric acid?

• Zn + HCl → ZnCl₂ + H₂

• Zn + HCl → ZnCl₂ + CO₂ + H₂O

• Zn + HCl → ZnCl₂ + H₂ + H₂O

• Zn + HCl → ZnCl₂ + H₂O

Another one! Could be harder.

Remember to identify which the acid is reacting to. Is it metal? metal carbonate? metal oxide or metal hydroxide?

(refer to reactions of acids in pg 5 of Topic 9 notes)

Which of the following is a correct between lead carbonate and phosphoric acid?

• PbCO₃ + H₃PO₄ → Pb₃(PO₄)₂ + H₂

• PbCO₃ + H₃PO₄ → Pb₃(PO₄)₂ + CO₂ + H₂O

• PbCO₃ + H₃PO₄ → Pb₃(PO₄)₂ + H₂ + H₂O

• PbCO₃ + H₃PO₄ → Pb₃(PO₄)₂ + H₂O