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2 December, 16:48

What mass of Na2SO4 is needed to make 2.5L of 2.0 M solution?

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  1. 2 December, 19:36
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    Moles of Na2SO4 = conc. x volume (dm3)

    = 2 x (2500cm3/1000)

    = 5 mol

    Mass of Na2SO4 = moles x molar mass

    = 5 x ((23 x 2) + 32.1 + (16 x 4))

    = 710.5g
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