74. Solving a chemistry problem
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74. Solving a chemistry problem
63. For titration of 20 ml of a solution containing Na2CO3 and KOH, 25 ml of a solution of H2SO4 with T = 0.004675 g / ml went to phenolphthalein; when the solution was titrated against methyl orange, another 5 ml of sulfuric acid solution went out. What is the normality of the titrated mixture in terms of Na2CO3 and in terms of KOH?
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