5.2 pH and buffers

Question 1

what is a bronsted-lowry acid

Answer 1

a species that donates a proton

Question 2

what is a bronsted-lowry base

Answer 2

a species that accepts protons

Question 3

how many protons do monobasic acids have to donate?

Answer 3

1

Question 4

how many protons do dibasic acids have to donate

Answer 4

2

Question 5

pH equation

Answer 5

Question 6

how many times would the conc of H increase as pH increases from 4-5

Answer 6

10 times

Question 7

[H+] =

Answer 7

Question 8

is water an acid or a base

Answer 8

it can act as both

Question 9

equation for the partial dissociation of a weak acid, HA

Answer 9

Question 10

equilibrium for Ka of weak acid

Answer 10

Question 11

what is Ka dependant on?

Answer 11

temp

Question 12

pKa =
Ka =

Answer 12

Question 13

what does a larger vaule of Ka/smaller vaule of pKa =

Answer 13

stronger acid

Question 14

what does a smaller vaule of Ka/larger vaule of pKa =

Answer 14

weaker acid

Question 15

titration curve of a strong acid and strong base

Answer 15

Question 16

titration curve of a strong acid and weak base

Answer 16

Question 17

titration curve of a weak acid and strong base

Answer 17

Question 18

titration curve of a weak acid and weak base

Answer 18

Question 19

how do buffers work?

Answer 19

keep the conc of hydrogen ions and hydroxide ions constant by shifting the position of equilibrium

Question 20

what are acidic buffers made from?

Answer 20

mixture of a weak acid and a soluble salt of that acid

Question 21

what happens if an alkali is added to an acidic buffer solution

Answer 21

the OH- ions react with the HA, removing the OH- and shifting to give water and A-

Question 22

what happens if an acid is added to an acidic buffer solution

Answer 22