hcl=h(+)+cl(-)
C(h+)=C(hcl)=10^-4M
Kw=C(h+)*C(oh-)=10^-14M
C(oh-)=10^-14M/10^-4M=10^-10M
ph=-lg[C(h+)]=-lg(10^-4M)=4
poh=-lg[C(oh-)]=-lg(10^-10M)=10
или
ph+poh=14
poh=14-ph=14-4=10
hcl=h(+)+cl(-)
C(h+)=C(hcl)=10^-4M
Kw=C(h+)*C(oh-)=10^-14M
C(oh-)=10^-14M/10^-4M=10^-10M
ph=-lg[C(h+)]=-lg(10^-4M)=4
poh=-lg[C(oh-)]=-lg(10^-10M)=10
или
ph+poh=14
poh=14-ph=14-4=10