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Flashcards in pH Notes Deck (18)
1

Molecules such as ____ and _____ dissolved in water may dissociate into charged ions, _______.

acids

bases

ionization

2

An _____ is a substance that when it ionizes in a ____-based solution, it increases the number of ___ in a solution.

acid

water

H+ / Hydrogen ions / protons

3

A _____ is a substance that when it _________ in a water-based solution, it ______ the number of H+ in a solution.

base

ionizes

decreases

4

pH is the _______ of the concentration of _________ in a solution. 

It can be easily measured by a _____.

measurement

protons / H+ / hydrogen ions

pH strip

5

If blood pH rises over 7.45 that means that the concentration of   ______ goes _______.

Is blood pH over 7.45 in-range or out-of-range?

protons

down

out-of-range

6

Our body's organic molecules, especially _______ may not function when the pH is changed.

We need to balance pH in our bodies because _____ ____ release waste products that can change pH.

Also the _________can change the pH in our cells and fluids.

proteins

living cells

food we eat

7

pH scale ranges from _______.

pH = _____is neutral

pH greater than ____is basic.

acidic pH is anything _________

0 to 14

7

7

less than 7

8

What happens when H2O combines with CO2?

Carbonic Acid

H2CO3

9

What does acidosis mean?

The increase in protons has decreased blood pH below 7.35

10

Difference in pH scale between 2 and 3 signifies a difference of ___.   pH measures what? __

Solution with pH 2 is ten times more _____ than a solution of pH 3.

if a solution A is 100 times more concentrated than solution B than the pH difference is __.  

10 times         /     protons

concentrated

2

 

11

A buffer is a ______.

It functions to _____ the change in pH when a ___ or ___ is added to solution.

solution

minimize

base

acid

12


Add acid to a buffer and the buffer will combine with _____ and help _______ the pH.

It is the _____ in the buffer which binds H+

extra protons

maintain

weak base

13

Carbon dioxide is produced as a waste product during cell respiration.

If the body cannot get rid of CO2 it will combine with ______ in the blood and lower the blood pH.

Lungs regulate the amount of _____ in the blood.

And the kidneys regulate the amount of ______ ions in the blood.

water

CO2

bicarbonate / HCO3-

14

Add a _____ to a buffer and the buffer will release H+ to maintain the pH.

Most buffers consist of a weak acid and weak base

It is the ____ that releases H+ to maintain pH.

base

weak acid

15

3 main buffer systems of the body*

Bicarbonate

Phosphate

Protein

16

What 2 organs regulate the amount of

CO2 and HCO3- in the blood?

Lungs

Kidneys

17

Give the formula that summarizes the

reaction of CO2 and H20 in the blood.

CO2 + H20 H2CO3 H+ + HCO3-

Lungs remove CO2

Kidneys remove HCO3-

18

Name some diseases that cause acidosis.

Emphysema

asthma

bronchitis

pneumonia

pulmonary edema