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HACTEHA [7]
3 years ago
14

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

Chemistry
1 answer:
Gala2k [10]3 years ago
5 0
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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