SC8 b Looking at acids

How many time more acidic is HCl with a pH of 0 than vinegar with a pH of 4

0-4= 10x10x10x10= 10000 times more acidic =concentration of H+ ions 10000 times greater

Formula to work out concentration

Concentration amount dissolves /volume of solution

The more concentrated the acid the .... It reacts with magnesium metal

Faster

What does concentration mean?

How much of the solute is located throughout the solvent.

Concentrated means

Large amount of solute in a small volume of solvent

What metal can you use to test the strength of acids?

Magnesium

dilute means

Small amount of solute in a large volume of solvent

The pH level of an acid depends on two factors:

Strength of the acid Concentration of the acid

How does a strong acid differ from a weak acid?

Strong acid molecules break up completely into ions when they dissolve in water whereas weak acids only partially break up into ions.

Between each pH 0-7 level the concentration of H+ ions increases by what?

X10

Units for concentration of a solution

g dm-3