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Date: Wed, 29 Dec 2021 12:18:12 -0800 (PST)
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Subject: =?UTF-8?Q?pour_calcule_le_e_pourcentage_la_teneur_en_H3PO4_inc?=
	=?UTF-8?Q?onnue_dans_solution_de_25ml_et_dos=C3=A9_avec_NaOH_=280=2C1N=29_en_pr?=
	=?UTF-8?Q?=C3=A9sence_d=27indicateur_Vert_de_bromocresole__?=
From: ladgham mourad <ladghammourad@gmail.com>
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quel est le coefficient d'expression de r=C3=A9sultats=20
multiplier par le volume d'=C3=A9quivalent d'NaOH
-  en sais que le pH=3D0,5(pKa1 + pKa2) =3D 4,67