1.3 - pH

Question 1

What is the normal pH for blood?

Answer 1

7.4

Question 2

Why can the body not tolerate an out of range pH?

Answer 2

Because cells and metabolic functions in the body can’t function

Question 3

What body organs malfunctioning could be responsible for a pH imbalance?

Answer 3

Lungs and Kidneys

Question 4

What does pH stand for?

Answer 4

Potential hydrogen ion concentration

Question 5

Define an acid

Answer 5

An acid is a substance that increases the hydrogen ion concentration in a solution

Question 6

Define a base

Answer 6

A base is a substance the increases the hydroxide concentration in a solution

Question 7

What is the range of the pH scale and the ranges of acid vs base?

Answer 7

0-14. 0-7 is acidic. 7-14 is basic. 7 is neutral.

Question 8

A pH of 14 has how many less H+ than pH of 12

Answer 8

14-12=2 so 10^2 aka 100

Question 9

Why are buffers important in the body?

Answer 9

The body has enzymes which catalyze important metabolic reactions. These enzymes function optimally within a narrow pH range and can even denature; buffers resist major pH shifts allowing enzymes to work optimally.

Question 10

How do buffers work?

Answer 10

Buffers accept H+ when they are in excess and donate H+ when they are few in the solution