MODULE 6 HSC CHEMISTRY Acid and Base reactions
ACTUAL EXAM 2026 -2027 \NEWEST UPDATE WITH
COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS \VERIFIED 100% GRADEDC A+
Arrhenius said:
What was Svante
1. Acids dissociate in water to produce H⁺ ions
Arrhenius' definition of an
2. Bases dissociate in water to produce OH⁻ ions
acid?
Acids:
1. taste sour
2. react with bases to form a salt and water
3. Have a pH less than 7
What are some properties of
4. change the colour of indicators such as litmus paper
acids?
5. Changes blue litmus paper to red, crimson
phenolphthalein to clear
6. are corrosive
7. can conduct electricity if dissolved in water
The Bronsted Lowry definition which is accepted:
What was Bronsted and 1. ACIDS are proton donors
Lowry's definition of an 2. BASES are proton acceptors
acid? 3. ACID-BASE reactions can be between aqueous solutions or
gases
Bases:
1. taste bitter
2. Feel slippery and smooth
What are some properties of 3. Have a pH greater than 7
bases? 4. change the colour of indicators such as litmus paper
5. Changes red litmus paper to blue, clear phenolphthalein to
crimson
6. Solutions can conduct electricity
Some substances can act as an acid or a base. They
What does "AMPHIPROTIC" can either donate or accept a proton. An example
, mean? is water H₂O can accept a proton and become H₃O⁺
or H₂O can donate a proton to become OH⁻ so
water is amphiprotic
When a base accepts a proton is becomes the
What is a conjugate acid? base's conjugate acid eg:OH⁻ + proton → H₂O
Water is the conjugate acid of the OH⁻ base
When an acid loses a proton it becomes
What is a conjugate base?
is conjugate base eg HCl - proton →
Cl⁻ Conjugate acid -base pair
What is the conjugate base HSO₄ ⁻¹
of sulfuric acid?
ACTUAL EXAM 2026 -2027 \NEWEST UPDATE WITH
COMPLETE QUESTIONS AND CORRECT DETAILED
ANSWERS \VERIFIED 100% GRADEDC A+
Arrhenius said:
What was Svante
1. Acids dissociate in water to produce H⁺ ions
Arrhenius' definition of an
2. Bases dissociate in water to produce OH⁻ ions
acid?
Acids:
1. taste sour
2. react with bases to form a salt and water
3. Have a pH less than 7
What are some properties of
4. change the colour of indicators such as litmus paper
acids?
5. Changes blue litmus paper to red, crimson
phenolphthalein to clear
6. are corrosive
7. can conduct electricity if dissolved in water
The Bronsted Lowry definition which is accepted:
What was Bronsted and 1. ACIDS are proton donors
Lowry's definition of an 2. BASES are proton acceptors
acid? 3. ACID-BASE reactions can be between aqueous solutions or
gases
Bases:
1. taste bitter
2. Feel slippery and smooth
What are some properties of 3. Have a pH greater than 7
bases? 4. change the colour of indicators such as litmus paper
5. Changes red litmus paper to blue, clear phenolphthalein to
crimson
6. Solutions can conduct electricity
Some substances can act as an acid or a base. They
What does "AMPHIPROTIC" can either donate or accept a proton. An example
, mean? is water H₂O can accept a proton and become H₃O⁺
or H₂O can donate a proton to become OH⁻ so
water is amphiprotic
When a base accepts a proton is becomes the
What is a conjugate acid? base's conjugate acid eg:OH⁻ + proton → H₂O
Water is the conjugate acid of the OH⁻ base
When an acid loses a proton it becomes
What is a conjugate base?
is conjugate base eg HCl - proton →
Cl⁻ Conjugate acid -base pair
What is the conjugate base HSO₄ ⁻¹
of sulfuric acid?
