Gen Chem 1

A tanker truck carrying 2.01×10^3kg of concentrated sulfuric acid solution tips over and spills its load. The sulfuic acid is 95.0% H2SO4 by mass and has a density of 1.84g/L.

Sodium Carbonate (Na2CO3)is used to neutralize the the sulfuric acid spill. How many kilograms of sodium carbonate must be added to neutralize 2.0*10^3kg of sulfuric acid solution?

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  1. Good God, what a mess.

    Balance the equation, see if it is a 1:1 mole ratio

    moles acid= .95*2.01E6g/molmassH2SO4
    moles base= mass/molemassNa2CO3

    set them equal, solve for mass of sodium carbonate.

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  2. H2SO4 + Na2CO3 --> H2O + CO2 + Na2SO4

    How much H2SO4 is in the load?
    2.01 x 10^6 g x 0.95 = ??g H2SO4 (the remainder is water).
    Convert g H2SO4 to moles. moles = grams/molar mass

    There is 1 mole Na2CO3 required for each mole H2SO4; therefore, moles Na2CO3 = moles H2SO4.

    Convert moles Na2CO3 to grams.
    g = mols Na2CO3 x molar mass Na2CO3

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  3. 7050kg

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  4. 66.6x10^6

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  5. 2060 kg

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