Acid Base n Bufferz

Question 1

An acid is a substance that

Answer 1

increases the hydrogen ion concentration in a solution

Question 2

Acids that dissociate completely when mixed with water is

Answer 2

weak acid and a good buffer

Question 3

Acids or bases that dissociate incompletely are represented by ___ in the chemical equation.

Answer 3

reversible arrow
solid arrow
dotted arrow

Question 4

By definition, a base is a substance that

Answer 4

reduces the hydrogen ion concentration in a solution.

Question 5

When a solution has the same concentration of hydrogen and hydroxide ions, this solution is said to be

Answer 5

neutral

Question 6

Given pH = −log[H+], what is the pH of 0.02 mol/L solution of H3PO4?

Answer 6

1.39

Question 7

The pH of human blood is very close to 7.4, which is slightly basic. If the pH of blood drops to 7.35, ________ occurs

Answer 7

acidosis

Question 8

Buffer

Answer 8

resists the change of pH

Question 9

how can the CO2 buffer restores the pH to the norm when there is excessive hydrogen ion in your blood?

Answer 9

hydrogen ions reacts with the bicarbonate ion (HCO3-) to form carbonic acid (H2CO3)

Question 10

how can the CO2 buffer restores the pH to the norm when there is excessive hydroxide ion in your blood?

Answer 10

hydrogen ion reacts with hydroxide ions to form water

Question 11

Zwitterions are ions that bear

Answer 11

anion and cation

Question 12

The main theme of this lecture to Cell Biology is

Answer 12

how buffers maintain stable pH in our body given that there are million of reactions going on in our body all the time

Question 13

How is zwitterion formed???

Answer 13

By AMINO ACIDS donating its acidic hydrogen—> amino group

Question 14

SA

Answer 14

HCL–> H+ + CL-

Question 15

WA

Answer 15

Carbonic acid

H2CO2—> HCO-3 + H*

Question 16

SB

Answer 16

NaOH

Sodium hydroxide

Question 17

WB

Answer 17

Ammonia

NH3 + H+ DOUBLE Arrow NH4*

Question 18

How to know if it is stron A/B??

Answer 18

Reversible arrow