Jawabanmu

2014-03-07T23:24:42+07:00
N=m/Mr
=2,5/35
=5/70

M=n/V
=5/70 /0,4
=5/28

[OH]=M α
=5/28 × 0,01
=0,2 ×10^-3

pOH=3-log 2
pH=11+log 2=11,3
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