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Sample Problem No. 2 An analytical portion of primary standard grade (PSG) Na2CO3 (M.M. = 105.99) weighing 0.4240 g was dissolved in 50.00 mL of

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Sample Problem No. 2 An analytical portion of primary standard grade (PSG) Na2CO3 (M.M. = 105.99) weighing 0.4240 g was dissolved in 50.00 mL of HCl solution. The excess, unreacted HCl that was back-titrated with 12.38 mL of 0.1500 M NaOH. Calculate the molarity of the HCl solution. Calculate the molar concentration of the HCl solution A 0.1171 M HCI B 0.1972 M HCI 0.07714 M HCI 0.03714 M HCI

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