Thursday, May 18, 2017
CHEMISTRY PRACTICAL WAEC 2016 FREE EXPO ANSWER
CHEMISTRY PRACTICAL WAEC 2016 FREE EXPO ANSWER
3a) The differences in Boiling point of a liquid is
(I) they are used to separate the mixture of color
(II) with close different boiling point
(3b) (i) To make the accurate result of the solution
(II) To avoid the error of decimal.
3c)
C1 = 2.5mol/dm3
V2 = 500cm
C2 = 0.2mol/dm3
V1 = ?
C1V1 = C2V2
V1 = C2V2/C1
V1 = 0.2 x 500 / 2.5
V1 = 40.0cm3
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