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4 November, 19:20

What volume of 0.08892 M HNO3 is required to react completely with 0.2352g of potassium hydrogen phosphate? 2HNO3 (aq) + K2HPO4 (aq) ⟶H2PO4 (aq) + 2KNO3 (aq)

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  1. 4 November, 19:28
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    The volume of 0.08892 M HNO3 required to react completely with 0.2352g K2HPO4 is 0.0304 Liters

    calculation

    find the moles of K2HPO4 reacted

    moles=mass/molar mass

    =0.2352 g/174 g/mol = 1.35 x10^-3 moles

    By use of mole ratio of HNO3: K2HPO4 which is 2:1 the moles of HNO3 is therefore = 1.35 x10^-3 x2 = 2.7 x10^-3 moles

    Volume of HNO3=moles/molarity

    =2.7 x10^-3/0.08892 = 0.0304 Liters
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