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Having only one hydrogen ion to donate to a base in an acid-base reaction.

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Fluorescence data from this step is either presented as a raw curve, which in the case of a single product looks much like a pH titration curve for a monoprotic acid (Figure 3); or it may be processed, most commonly with a second derivative function, which graphs as a peak at the inflection point of the raw data.
The titration of an acid with a base provides a textbook example in analytical chemistry of the variation of pH during a chemical reaction; for this purpose the calculation of a curve for the titration of a monoprotic acid with a monoprotic base might be practicable as a tedious manual calculation, whereas an analogous calculation for a diprotic acid might strain the limit of human patience, even when approximations, possibly severe, are invoked.
In other words, besides the capacity of acetylene and ethylene to form traditional hydrogen-bonded complexes with monoprotic halogen acids, i.
Following the titration monoprotic asid-strong base with High Performance Liquid Chromatography --HPLC--
The behavior shown in Figure 1 is expected, as hexamine is a monoprotic base and to react it has to first start decomposing.