IIT JEE , AIEEE Forum - Chemistry , Physical Chemistry

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1) 0.01 mole of H3PO2 and 0.01 moles of H3PO3 are titrated with V ml of 0.1M NaOH solution in presence of phenolphthalein indicator, V will be
a)300ml            b)200ml
c)400ml            d)500ml

2)For a given mixture of NaHCO3 and Na2CO3 volume at a given HCl required is x ml with phenolphthalein indicator and further y ml required with methyl orange indicator. Hence volume of HCl for complete reaction of NaHCO3 is
1)2x                  b)x/2
3)y                  c)(y-x)

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