'in a some Solna The Sample may contain NaOH, NaHCO3 Or Nozl0z alone or mixture and non-reactive impurities. No more than two of these constituents can be present together in solution because one will be elemenated by recetion betweeen the other two 8 NaOH + NaHCO3 Na2CO3 + H2O out pH-range Now, we are titrating too seperate samples (some-omount with HCI , oneo in presence of phenolphthalein (pH) and second in presence of bromo resol green (bog) indicator Indication user 0 PHP 8-10 First end point (reaction of basic part ie. Naon' I Na2CO3 ) beg 4-6 Second end point ( reaction of acidic part i.e. NaHCO) Following reaction caill take place, indicator ACT NaCl + HO (Both php & beg) Nazco + HCI NaHCO + NaCl (php) NaHCO + HCI Nacl + HCO3 + HCO (beg) (initial present + from Nazco, px) NaOH + > Nowe following analysis to be considered to determine the composition { Uphp Vol of acid to reach php end point Vorg Vol of acid to reach big end point Here, 'in a some Solna The Sample may contain NaOH, NaHCO3 Or Nozl0z alone or mixture and non-reactive impurities. No more than two of these constituents can be present together in solution because one will be elemenated by recetion betweeen the other two 8 NaOH + NaHCO3 Na2CO3 + H2O out pH-range Now, we are titrating too seperate samples (some-omount with HCI , oneo in presence of phenolphthalein (pH) and second in presence of bromo resol green (bog) indicator Indication user 0 PHP 8-10 First end point (reaction of basic part ie. Naon' I Na2CO3 ) beg 4-6 Second end point ( reaction of acidic part i.e. NaHCO) Following reaction caill take place, indicator ACT NaCl + HO (Both php & beg) Nazco + HCI NaHCO + NaCl (php) NaHCO + HCI Nacl + HCO3 + HCO (beg) (initial present + from Nazco, px) NaOH + > Nowe following analysis to be considered to determine the composition { Uphp Vol of acid to reach php end point Vorg Vol of acid to reach big end point Here