Acid, strong Brønsted (AS/A2 generic)
Brønsted acid, strong (AS/A2 generic)
Strong acid (AS/A2 generic)
  Belongs to a sub-set of generics specific to the British A-Level exam system.

Wikipedia Page:

Strong acid (AS/A2 generic)
is defined with respect to the entities below:
The entities below are defined with respect to:
Strong acid (AS/A2 generic)
Hydrochloric acid, aqueous

Hydrogen bromide

Hydrogen chloride

Hydrogen iodide

Hydrogen sulfate ion

Nitric acid, concentrated

Oxonium ion

Phosphoric acid

Sulfuric acid

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