Which of the following options best describes the properties of acids?
Taste Bitter, pH above 7, Irritant, Aqueous
Taste Sour, pH above 7, release H+ ions in solution
Taste Sour, pH lower than 7, Explosive, Aqueous
Taste Sour, pH lower than 7, Corrosive, Aqueous
Which of the acids below are strong mineral acids? (multiple answers are correct)
Hydrochloric acid - HCl
Nitrous Acid - HNO2
Sulfurous acid - H2SO3
Sulfuric acid - H2SO4
Nitric Acid - HNO3
When acids dissolve in water, they a"split-up" to release H+ ions. Which other terms can be used instead of the term "split-up"?
Dissociate
Disintegrate
Disperse
Ionise
Which ionisation equation best describes how CH3COOH (ethanoic acid) dissociates in solution?
CH3COOH --> 2H+ + CH2OO-
CH3COOH --> CH3COO- + H+
CH3COOH --> 3H+ + CHCOO-
A strong acid is an acid that:
has a lot of water added to it
dissociates (splits up) to release a lot of H+ ions
dissociates (splits up) to release a little H+ ions
has little water added to it
Basicity refers to the number of H+ ions released by an acid in solution. What do understand by the word monobasic acid?
releases two H+ ions in solution (per molecule)
releases one H+ ion in solution (per molecule)
releases three H+ ions in solution (per molecule)
What happens to blue litmus paper when it is dipped in a solution of HCl in methylbenzene?
It turns red because the HCl ionises releasing H+ ions. This makes the solution acidic.
It remains blue because HCl does not ionise. It does not release H+ ions. The solution remains neutral.
It turns white because HCl in methylbenzene is a type of bleach.
The litmus paper dissolves completely because HCl in methylbenzene is a very strong acid.
Fill in the equations below with the appropriate symbols: HCl → ❌ + Cl‾ H₂SO₄ → ❌ + ❌ ❌ → 2H+ + CO₃²‾ HNO₃ → H+ + ❌
Which of the following groups of items are ALL acidic?
Coca cola, Toothpaste, Stomach acid, Baking Soda
Coca cola, Lemon Juice, Stomach acid, Vinegar
Lemon Juice, Stomach acid, Vinegar, Water
Coca cola, Bleach, Toothpaste, Lemon Juice
The term "Concentrated" acid is the same as the term "Strong Acid"
