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pH and Buffer Solutions Quiz

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Questions and Answers

Which pH value indicates an acidic solution?

pH > 7

pH = 14

pH = 7

pH < 7 (correct)

What is pH a measure of?

Concentration of oxygen ions

Concentration of hydrogen ions (correct)

Concentration of sodium ions

Concentration of chloride ions

What is the physiological pH of body fluids?

pH = 7.45 (correct)

pH < 7

pH > 7.45

pH > 7

What is the function of a buffer solution?

To resist changes in pH Signup and view all the answers

Which combination can form a buffer solution?

Weak acid and its salt Signup and view all the answers

Which combination can form a buffer solution?

Acetic acid & Sodium acetate Signup and view all the answers

Under what conditions does acidosis occur in the blood?

When the blood pH is below 7.45 Signup and view all the answers

What is the relationship between buffering capacity and pH?

Buffering capacity is highest when the pH is near the pKa Signup and view all the answers

Study Notes

pH and Acidity

A pH value less than 7 indicates an acidic solution.
pH is a measure of the hydrogen ion concentration in a solution.

Physiological pH

The physiological pH of body fluids typically ranges from 7.35 to 7.45, crucial for maintaining bodily functions.

Buffer Solutions

A buffer solution functions to resist changes in pH when acids or bases are added, thereby stabilizing the pH of a solution.

Combinations for Buffer Solutions

Common combinations that can form a buffer solution include weak acids and their conjugate bases, or weak bases and their conjugate acids.

Acidosis Conditions

Acidosis occurs in the blood when there is an increase in hydrogen ion concentration, typically when pH drops below 7.35, indicating a more acidic environment.

Buffering Capacity and pH Relationship

The buffering capacity is highest at the pH closest to the pKa of the acid in the buffer system, illustrating the optimal range for effective pH stabilization.

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Description

Test your knowledge about pH and buffer solutions with this quiz. Learn about the measurement of acidity or basicity, physiological pH of body fluids, acidosis, alkalosis, and the properties of buffer solutions.