Chemistry - Acids, Bases, and Salts Theory - Part 1

Give an example of a base.

• NaOH → Na⁺ + OH⁻.

• HCl → H⁺ + Cl⁻

• H₂SO₄ → 2H⁺ + SO₄²⁻

• NH₄Cl → NH₄⁺ + Cl⁻

Is HCl a weak acid?

• True

• False

• It depends on the concentration

• Only in certain conditions

Give an example of a salt formation reaction.

• HCl + NaOH → NaCl + H₂O

• H₂SO₄ + NaOH → Na₂SO₄ + H₂O

• HCl + KOH → KCl + H₂O

• NaCl + H₂O → Na + Cl₂ + H₂

What does neutralization produce?

• Acid and base

• Salt and water

• Carbon dioxide and water

• Hydrogen and oxygen

What is a weak base?

• A base that completely dissociates in water (e.g., NaOH)

• A base that partially dissociates in water (e.g., NH₃)

• A substance that has a pH of 7

• A base that reacts vigorously with acids

List three properties of acids.

• Sour taste, Corrosive, Turn blue litmus paper red

• Sweet taste, Non-corrosive, Turn red litmus paper blue

• Bitter taste, Corrosive, Turn yellow litmus paper green

• Sour taste, Non-corrosive, Turn green litmus paper red

What is a neutralization reaction?

• Acid + Base → Salt + Water.

• Acid + Acid → Salt + Water.

• Base + Base → Salt + Water.

• Acid + Base → Gas + Water.

What is a strong base?

• A base that partially dissociates in water (e.g., NH4OH)

• A base that completely dissociates in water (e.g., NaOH, KOH)

• A base that does not dissociate in water (e.g., CaCO3)

• A base that reacts with acids to form salts and water only

What is a weak acid?

• An acid that completely dissociates in water (e.g., HCl)

• An acid that partially dissociates in water (e.g., CH₃COOH)

• An acid that does not dissociate in water (e.g., H₂O)

• An acid that is strong at high temperatures (e.g., H₂SO₄)

Which of the following is a strong acid?

• CH₃COOH

• HCl

• NH₃

• NaOH