Examlex
A positive statement is:
pH
A scale used to specify the acidity or basicity of an aqueous solution, with values ranging from 0 (highly acidic) to 14 (highly basic) and 7 being neutral.
Hydrochloric Acid
Hydrochloric Acid is a strong, corrosive acid found in the stomach that aids in digestion by breaking down food and killing pathogens.
Sodium Hydroxide
A highly caustic metallic base and alkali salt, commonly used in industrial processes and as a drain cleaner.
Buffer
A substance in a solution that tends to lessen the change in hydrogen ion concentration (pH) that otherwise would be produced by adding an acid or base.
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