3b

Question 1

more dissociation means

Answer 1

it’s more acidic
as more [H+] is released
meaning a higher Ka

Question 2

a higher Ka means it’s more

Answer 2

acidic

Question 3

a lower pKa means it’s more

Answer 3

acidic

Question 4

how do we get from ka to pKa

Answer 4

-log(Ka) = pKa

Question 5

what does pKa tell u

Answer 5

it tells u where the position of equilibrium is

Question 6

the more acidic smt is..

Answer 6

the higher the Ka

the lower the pKa

Question 7

what’s the equation for Ka

Answer 7

[H+] [A-] /// [HA]

x10^-5 moldm-3

Question 8

anion stabilisation and acidity

Answer 8

the more stable an anion is,, the less energy it has,, it doesn’t mind being deprotonated into an anion as it is stable.

therefore the more stabilised an anion is,, the more acidic it is as it can release more H+

Question 9

what does the pKa of alpha hydrogens depend on

Answer 9

• the functional group C=O is part of
• amount of c=o near the Hs
• functional groups attached to the alpha C
• resonance properties of substituents
• electronegativity if atoms directly bonded to c=o

Question 10

what do we mean by resonance properties

Answer 10

electron withdrawing
electron donating properties

Question 11

what effect does CH3 give

Answer 11

inductive effect

it donates electron density

Question 12

what effects does an OEt group have

Answer 12

mesomeric donor

pi donation

donated electron density