pH czystej wody wynosi 7
Obliczamy pH roztworu NaOH
V=1dm³
nOH⁻ = nNaOH =0,01mola
[OH⁻] = 0,01mola/1dm³ = 0,01mol/dm³ 10⁻² mol/dm³
pOH = 2
pH = 14-2 = 12
Zmiana pH 12-7 = 5
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pH czystej wody wynosi 7
Obliczamy pH roztworu NaOH
V=1dm³
nOH⁻ = nNaOH =0,01mola
[OH⁻] = 0,01mola/1dm³ = 0,01mol/dm³ 10⁻² mol/dm³
pOH = 2
pH = 14-2 = 12
Zmiana pH 12-7 = 5