INDIKATOR FENOLFTALEIN PDF

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The research has been carried out to substitute the synthetic indicator with herbal indicator extracted from flower crown of Hibiscus rosa sinensis L extract.

The herbal indicator was extracted from the flower crown Hibiscus rosa sinensis L using a mixture methanol-acetic acid. Then it was evaluated with phenolphthalein and methyl orange E merck comparer to titration the acid-base, they are strong acid-strong base, weak base-strong acid and weak acid-strong base. Titrasi asam-basa memerlukan indikator untuk menunjukkan perubahan warna pada setiap interval derajad keasaman pH. Indikator sintetis yang digunakan selama ini mempunyai beberapa kelemahan seperti polusi kimia, ketersediaan dan biaya produksi mahal.

Upaya penelitian sudah dilakukan untuk menggantikan indikator sintetis dengan indikator dari ekstrak mahkota bunga sepatu. Indikator herbal tersebut dibuat dengan cara mengekstrak mahkota bunga Hibiscus rosa sinensis L dengan mengunakan pelarut metanol-asam asetat.

Kemudian dievaluasi dengan indikator pembanding fenolftalein dan metil oranye produksi E merck untuk titrasi asam-basa yaitu asam kuat-basa kuat, basa lemah-asam kuat dan asam lemah-basa kuat. Dari hasil penelitian diketahui bahwa indikator dari mahkota bunga sepatu untuk menunjukkan titik ekivalen dalam titrasi tersebut memberikan hasil yang setara dengan indikator pembandingnya.

Hasil penelitian menunjukkan, indikator dari mahkota bunga sepatu dapat sebagai pengganti indikator sintetis metil oranye dan fenolftalein yang selama ini digunakan.

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Phenolphthalein:PrThr:Pt:Ser/Plas:Ord

The research has been carried out to substitute the synthetic indicator with herbal indicator extracted from flower crown of Hibiscus rosa sinensis L extract. The herbal indicator was extracted from the flower crown Hibiscus rosa sinensis L using a mixture methanol-acetic acid. Then it was evaluated with phenolphthalein and methyl orange E merck comparer to titration the acid-base, they are strong acid-strong base, weak base-strong acid and weak acid-strong base. Titrasi asam-basa memerlukan indikator untuk menunjukkan perubahan warna pada setiap interval derajad keasaman pH. Indikator sintetis yang digunakan selama ini mempunyai beberapa kelemahan seperti polusi kimia, ketersediaan dan biaya produksi mahal.

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Fenolftalein

From Wikimedia Commons, the free media repository. Horrez gain, laxante, tindagai eta erreaktibo gisa erabiltzen da. Media in category "Phenolphthalein" The following 53 files are in this category, out of 53 total. Acid Titration. Exemple dosage acide faible base forte.

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