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A sample of pure sodium carbonate Na2CO3 ( M.mass 106 g/mol),weighing 0.3542g is dissolved in water and titrated with a solution of HCl.A volume

 

A sample of pure sodium carbonate Na2CO3 ( M.mass 106 g/mol),weighing 0.3542g is dissolved in water and titrated with a solution of HCl.A volume of 30.23mL is required to reach the Methyl-Orange end point .The molarity of the acid solution is : (2HC1+NA2CO3-2NAC1 +H2O+CO2) Select one: O a. 0.1212 O b. 0.2211 O c. 0.02211

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