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A mixture contains 1.0 mole each of NaOH...

A mixture contains 1.0 mole each of NaOH, Na2CO3 and NaHCO3. When half of mixture is titrated with HCI.it required x mole of HCI in presence of phenolphthalein. In another experiment, half of mixture required y mole of same HCI in presence of methyl orange. Find the value of(x + y)

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1 g of a mixture of NaOH and Na_2CO_3 and inert impurities was first titrated with phenolphthalein and N//10HCl , 17.5 mL of HCI was required at the end point. After this methyl orange was added and 2.5 mL of same HCI was again required . Find out percentage of NaOH and Na_2CO_3 in the mixture.

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This question has Statement I and Statement II. Of the four choices given after the Statements, choose the one that best describes the two Statements. Statement - I : In the titrations of Na_2CO_3 with HCI using methyl orange indicator, the volume required at the equivalence point is twice that of acid required using phenolphthalein indicator. Statement - II: Two moles of HCI are required for complete neutralization of one mole of Na_2CO_3 .

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