Througout this I will use the abbreviations (S = strong, W = weak, A = acid, B = base)
SASB: the pH curve will start off at low pH (ie: pH 1) and end at high pH (ie: pH 13)
SAWB: will start off at low pH and end about pH 10
WASB: the pH curve will start off about pH 4 and end at pH 13
WAWB: the pH curve will start off about pH 4 and end about pH 10
Be careful if the question states that acid is added to the alkali, in this case the curve will start off at high pH and end at a lower pH
Halfway up the vertical portion of the curve is the equivalence point - the point at which the solution has been neutralised.
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