tolong bantu nomor 23 dan 24

23. pOH=1
=[OH-]=10⁻¹

n=gr/Mr
=1,4/56
=0,025

V=n/M
=0,025/10⁻¹
=250mL

24. Konsentrasi campuran:
Mcampuran = [M1.V1.b + M2.V2b] / V1+V2
=100.0,01 + 100.0,01.2 / 200
=1,5.10⁻²

[OH⁻]=1,5.10⁻²
pOH= 12+log1,5