Welcome to the Quiz!
This quiz contains 12 questions from a mix of 1 subtopics.
A substance which forms an aqueous solution with a pH of less than 7 is defined as:
An acid
An alkali
A base
A salt
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acids ionise completely, whereas acids only partially ionise.
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Which of the following substances are strong acids?
(Select all that apply)
Hydrochloric acid
Nitric acid
Sulfuric acid
Citric acid
Ethanoic acid
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True or false? The dissociation of weak acids is a reversible reaction, which means that the products can react together to reform the acid.
True
False
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For a weak acid, does the position of equilibrium lie to the left or the right?
Left
Right
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Which of the following substances are weak acids?
(Select all that apply)
Citric acid
Hydrochloric acid
Carbonic acid
Ethanoic acid
Nitric acid
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Carbonic acid is described as a weak acid.
Which of the following statements apply to carbonic acid?
(Select all that apply)
It will form a solution with a pH of less than 7
It does not fully ionise to release hydrogen ions
It will form a solution with a pH of more than 7
It does fully dissociate to release hydrogen ions
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Which of these describes the strength of an acid?
The proportion of acid molecules which dissociate into hydrogen ions
The number of hydrogen ions released by the acid molecule
The concentration of hydrogen ions in a solution
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True or false? The strength of an acid is the same as its concentration.
True
False
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As the concentration of hydrogen ions in a solution increases, what happens to the pH?
The pH decreases
The pH increases
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A solution decreases from pH 6 to pH 5.
By what factor has the concentration of hydrogen ions increased?
10 x
100 x
1000 x
10,000 x
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The dissociation of hydrogen ions from weak acids is a reaction.
This means as well as reactants forming products, the products can react to reform the reactants.
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