Asked by Bravo
Starting with 50cm³ of 2.8M sodium hydroxide, describe how a sample of pure sodium sulphate crystals can be prepared
Answers
Answered by
Bravo
I don't know
Answered by
DrBob222
millimoles NaOH initially = mL x M = 50 mL x 2.8 M = 140
2NaOH + H2SO4 ==> Na2SO4 + 2H2O
Start with 50 cc of 2.8 M NaOH, add140/2 = 70 millimoles H2SO4, allow the solution to cool, heat to remove the water and dry the Na2SO4 crystals in an oven @ 105 C. Done.
2NaOH + H2SO4 ==> Na2SO4 + 2H2O
Start with 50 cc of 2.8 M NaOH, add140/2 = 70 millimoles H2SO4, allow the solution to cool, heat to remove the water and dry the Na2SO4 crystals in an oven @ 105 C. Done.
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