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
A base
A salt
An alkali
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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)
Sulfuric acid
Nitric acid
Citric acid
Hydrochloric 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
Carbonic acid
Ethanoic acid
Hydrochloric 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 does fully dissociate to release hydrogen ions
It will form a solution with a pH of less than 7
It will form a solution with a pH of more than 7
It does not fully ionise 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 concentration of hydrogen ions in a solution
The number of hydrogen ions released by the acid molecule
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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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