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05-10-2018
Biology

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Which of the following is a true statement about acids and bases
-an acid has a ph of 7.1
-An acid accord hydrogen ions
-A base has ph of 7
-a base gives off hydroxide ions

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06-10-2018

According to Arrhenius concept:

An Acid is a substance which gives hydrogen ions (H⁺) when dissolve in water. Examples are HCl (Hydrochloric acid) , HNO₃ ( Nitric acid)

HCl ------- H⁺ + Cl⁻

A base is a substance which gives hydroxide ions (OH⁻) when dissolved in water. Examples are NaOH (Sodium hydroxide), KOH (Potassium hydroxide)

NaOH ------------ Na⁺ + OH⁻

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