acids and bases

Question 1

why do you never get H+ by themselves in water?

Answer 1

It is always combined with H2O to get hydroxonium ions. H3O+

Question 2

for a weak acid/weak base titration , why is it better to use a pH meter?

Answer 2

There isnt a sharp change and its colour would only change gradually , so it is hard to find the exact end point.

Question 3

for diprotic acids, there are usually two equivalence points why is that?

Answer 3

two protons are removed from the acid seperately

Question 4

in an acidic buffer, if more acid is added what happens?

Answer 4

the H+ react with the A- ions to form more weak acid.

Question 5

the pH scale is used as a logarithmic scale, why is this?

Answer 5

The concentration of hydrogen ions in aqueous solutioncovers a very wide range.

Question 6

An acid is

Answer 6

a proton donor.

Question 7

A base is

Answer 7

a proton acceptor.

Question 8

the ionic product of water is

Answer 8

KW = [H+][OH-]

Question 9

whats a buffer solution

Answer 9

A buffer solution maintains an approximately constant pH,despite dilution or addition of small amounts of acid or base.