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Given two mixtures: (I) NaOH and Na(2)CO...

Given two mixtures: (I) NaOH and `Na_(2)CO_(3)` and (II) `NaHCO_(3)` and `Na_(2)CO_(3)`.
100 ml of mixture I required w and x ml of 1 M HCl is separate titrations using phenophthalein and methyl orange indicators while 100 ml of mixture II required y and z ml of same HCl solutioni in separate titrations using the same indicators.

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A, B, C, D
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Amixture of caustic soda and soda ash requires 25ml 1M HCl for phenolphthalein indicator and 35ml of 1M HCl for methyl orange indicator. Calculate ratio of (a) number of equivalent and (b) number of moles of the component in the mixture.

Calculate the mass of Na_(2)CO_(3) required to prepare 250 ml of 0.5 N solution.

Knowledge Check

  • 40 mL of 0.05 M solution of sodium sesquicarbionate (Na_(2)CO_(3). NaHCO_(3).2H_(2)O) is titrated against 0.05 M HCl solution. X ml of HCl solution is used when phenophthalein is the indicator and y ml of HCl is used when methyl orange is the indicator in two separate titrations Hence (y-x) is

    A
    80mL
    B
    30mL
    C
    120mL
    D
    None of these

  • In the mixture of NaHCO_(3) and NaCO_(3) , volume of a given HCl required is x ml with phenolphathalein indicator and further y mL is required with methyl orange indicator. Hence volume of HCl for complete reaction of NaHCO_(3) present in the original mixture is

    A
    2x
    B
    y
    C
    x/2
    D
    (y-x)

  • During the titration of a mixture of Na_(2)CO_(3) and NaHCO_(3) against HCl

    A
    phenolphthalein is used to detect the first end point
    B
    phenophthalein is used to detect the second end point
    C
    methyl orange is used to detect the first end point.
    D
    methyl red is used to detect the first end point

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    A mixture of NaOH and Na_(2)CO_(3) is titrated with 50mL of 0.5N H_(2)SO_(4) for phenolpthalein indicator. Then it requires another 20mL of the same acid for methyl orange indicator. Determinine the weight of mixture.

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    A 100 ml mixture of Na_(2)CO_(3) and NaHCO_(3) is tittrated against 1 M HCl. If v_(1)L and v_(2)L are consumed when phenolphthalein and methyl orange are used as indicators respectively in two separate titrations, which of the following is true form molarities in the original solution.

    20 mL of x M HCl neutralises 5 mL of 0.2 M Na_(2)CO_(3) solution to phenolphthalein end-point. The value of x is

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