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Acids and Bases: pH in Human Blood

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Questions and Answers

If a solution has a pH between 8 and 14, it is classified as:

Acidic

Amphoteric

Neutral

Basic (correct)

Which of the following substances is an example of a soluble base or alkali?

Carbon dioxide (CO2)

Sodium hydroxide (NaOH) (correct)

Acetic acid (CH3COOH)

Hydrochloric acid (HCl)

What is the characteristic property of alkalis?

They are insoluble in water

They release hydroxide ions (OH-) in aqueous solutions (correct)

They release hydrogen ions (H+) in aqueous solutions

They have a pH less than 7

Which of the following equations represents the dissociation of a soluble base in water?

NaOH → Na+ + OH- Signup and view all the answers

What is the pH range of a solution that is considered alkaline?

pH > 7 Signup and view all the answers

Which of the following statements correctly describes the relationship between an acid and its conjugate base?

The conjugate base has one fewer proton than the acid. Signup and view all the answers

If a diprotic acid, H₂A, ionizes completely in water, what would be the pH of the resulting solution?

pH < 7.0 Signup and view all the answers

Which of the following statements correctly describes the strength of a triprotic acid?

The strength of a triprotic acid depends on the values of its three dissociation constants. Signup and view all the answers

For a monoprotic acid, HA, which of the following expressions represents the acid ionization constant (Ka)?

Ka = [HA] / ([H₃O⁺][A⁻]) Signup and view all the answers

If a weak acid, HA, has a Ka value of 1.0 × 10⁻⁵, what can be inferred about the strength of its conjugate base, A⁻?

The conjugate base is a weak base. Signup and view all the answers