-log[H+]
Calculating pH from H+ ion concentration
[H+][OH-]
The ionic product of water Kw
[H+][A-]/[HA]
Ka for weak acids
Maintain Temperature
How to improve the accuracy of an experiment when constructing a pH curve
Equivalence Point
The mid point of a titration curve
Colourless to Pink
Colour change with Phenolphthalein from acid to alkali
Pink to Colourless
Colour change with Phenolphthalein from alkali to acid
Strong Base
Strength of base required to use phenolphthalein
Any Acid
Strength of acid required to use phenolphthalein
Strong
Strength of acid required to use methyl orange
Any Base
Strength of base required to use methyl orange
Red to Yellow
Colour change of Methyl Orange from acid to alkali
Yellow to Red
Colour change of Methyl Orange from alkali to acid
HA
Is this method used for Excess HA or OH- in the reaction of a weak acid and strong base?
1) Calculate moles HA (it is still HA and not H+ as it is a weak acid)
2) Calculate moles OH-
3) Calculate moles XS HA or OH
4) Calculate moles HA left and A formed
5
OH-
Is this method used for Excess HA or OH- in the reaction of a weak acid and strong base?
1) Calculate moles HA (it is still HA and not H+ as it is a weak acid)
2) Calculate moles OH-
3) Calculate moles XS HA or OH
4) Calculate [OH-]
5) Use Kw to find [H+]