COMPARATIVE ASSESSMENTS OF IPOMOEA AND CAESALPINIA EXTRACTS USED AS POTENTIAL ACID-BASE INDICATOR AS REPLACEMENT TO SYNTHETICS
Naziru Alhassan Muhammad*, Ahmad Bala Ahmad, Khalid Da’u Khalid, Mustapha Balarabe Idris
ABSTRACT
Environmental pollution becomes a topic of discussion because of the excessive spillage of synthetic acid-base
indicator. Due to its hazardous effect and cost, scientist embark in search of substitutes which are less or even
nontoxic and eco-friendly source of indicator for acid-base titration. So many natural plants were tested and found
suitable. In this research, Ipomoea cairica and Caesalpinia pulcherrima extracts were tested and can effectively
serve and substitute synthetic indicators because of roughly having the same mean titre value (24+ 0. - -). Ipomoea
can replaces methyl orange and phenolphthalein in HCl vs NH3 coupling been with the same standard deviation (±
0.125). while Caesalpinia pulcherrima is the most preferable with the lowest standard deviation (± 0.0 - -).
Keywords: Ipomoea cairica, Caesalpinia pulcherrima, titrimetry, gravimetry and pH.
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