Sheet1TIRTRARE pH-metrica a ioniilor metalici in unui exces de EDTA,cu solutie standard de NaOHCalcul concentratie:Cn Mn+= Cn NAOH x FNaOH x (Vs NaOH/ Vs Mn+)Titrare:NrVs NaOH (ml)pHV' (ml)d1pH/dVV" (ml)d2pH/V'102.240.500.11.000212.341.500.12.000.1322.442.500.23.000.02432.643.500.224.00-0.05542.864.500.175.000.1653.035.500.276.000.24763.36.500.517.001.97873.817.502.488.001.51986.298.503.999.00-3.6710910.289.500.3210.00-0.12111010.610.500.211.00-0.08121110.811.500.1212.00-0.01131210.9212.500.1113.00-0.03141311.0313.500.0814.00-0.01151411.1114.500.0715.00-0.01161511.1815.500.0616.00-0.03171611.2416.500.0317.000.03181711.2717.500.0618.00-0.01191811.3318.500.0519.00-0.02201911.3819.500.0320.000.02212011.4120.500.0521.00-0.02222111.4621.500.0322.00-0.01232211.4922.500.0223.000.01242311.5123.500.0323.750.9016666667252411.5424.000.480833333324.000.0200347222Masa=0,0997,la equivalent pH=6,8Eg:1000*0,0997/(0,1*1*7,3)136.5753424658

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