CBSE Class 11-science Answered
Calculate the concentration of hydroxyl ion in 0.2 M solution of NH3OH having Kb = 1.8 x 10-4.
Asked by Topperlearning User | 28 Apr, 2015, 10:43: AM
Expert Answer
Use Oswald’s Dilution Law formula;
α = √ kb/C
Substitute the respective values; we get
α =√ kb/C = √1.8 x 10-4 /0.2 = .03 = 3%
[OH-] = 0.2 x .03 = 6.0 x 10 -3 M
Answered by | 28 Apr, 2015, 12:43: PM
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