CGIER 39 - Acid/Base Balance in the body

Question 1

actual value of Kw

Answer 1

1 x 10 ^-14

Question 2

pKa

Answer 2

-logKa

Question 3

Ka x Kb

Answer 3

10^-14

Question 4

pKa + pKb

Answer 4

14

Question 5

if the acid is weak the ____ Ka value and the ___ the pKa value and vice versa

Answer 5

1. smaller

2. larger

Question 6

if the base is weak the ____ the Kb value and the ____ pKb value and vice versa

Answer 6

1. smaller

2. larger

Question 7

What information does pKa give you?

Answer 7

It tells you how strong or weak a weak acid or weak base is!

the more it dissociates the smaller the pKa

Question 8

polyprotic acids

Answer 8

the amount of availavle protons

Question 9

monoprotic

Answer 9

1 available proton

Question 10

diprotic acid

Answer 10

2 available protons

Question 11

triprotic acid

Answer 11

3 available protons

Question 12

why is pKa greater in monoprotic and diprotic acids in some conditions

Answer 12

when the acid is charged and is no longer neutral they can not fully dissociate

Question 13

how can identify a strong acid or base

Answer 13

forward reaction only

don’t reverse back to regenerate its reactants

Question 14

when a salt is dissolved in water

Answer 14

COMPLETELY dissociates into its acid part and base part.

Question 15

hydrolysis

Answer 15

Hydrolysis is the reaction of a compound with the H+ ion or the OH- ion derived from water

Question 16

strong base weak acid how would you predict if the salt is acidic or alkaline

Answer 16

alkaline in water solution

prove it by having weak acid react with water to revert back its reactant and OH-

Question 17

Strong acid and weak base

Answer 17

acidic in solution

have weak base react with water to produce reactant and H3O+

Question 18

weak acid and weak base

Answer 18

If Ka = Kb, pH = neutral
If Ka > Kb, pH = acidic
If Ka < Kb, pH = basic

Question 19

if pKa = x

pKa = -logKa find Ka

Answer 19

10^-x