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52. Для приготовления стандартного раствора карбоната натрия взяли навеску 1,3250 г х.ч. Na2CO3, растворили ее и разбавили раствор водой в мерной колбе до объема 250,00 мл. Вычислите титр карбоната натрия по соляной кислоте.
