Homework Answers
Answer:
DF = Vi / Vf
( Vi = initial volume) (Vf = final volume)
a) DF = 0.1 / 1.0 = 1 : 10 Dilution. (Vf = 0.1 + 0.9 = 1.0 ml)
0.1 x 10 = 1
1.0 x 10 = 10
therefore, dilution is 1:10.
b) DF = 0.1 / 100.0 = 1 : 1000 Dilution. (Vf = 0.1 + 99.9 = 100.0 ml)
0.1 x 10 = 1
100.0 x 10 = 1000
therefore, dilution is 1:1000.
c) DF = 1 / 2 = 1 : 2 Dilution. (Vf = 1.0 + 1.0 = 2.0 ml)
dilution is 1:2.
d) DF = 1.2 / 12 = 1 : 10 Dilution. (Vf = 1.2 + 10.8 = 12.0 ml)
1.2 x 10 = 12
12 x 10 = 120
therefore, dilution is 1:10.
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