Journal of Chemistry / 2019 / Article / Fig 1

Research Article

Natural Plant Extracts as Acid-Base Indicator and Determination of Their pKa Value

Figure 1

Graph of pH vs. for each flower extract and methyl orange: (a) Bauhinia purpurea, (b) Impatiens balsamina, (c) Bougainvillea glabra, and (d) methyl orange.
(a)
(b)
(c)
(d)