n(HCl)=0.2*0.15=0.03 моль
n(NaOH)=0.1*0.1=0.01моль
NaOH+HCl=NaCl+H2O
n1(HCl) =0.03-0.01=0.02моль=2*10^-2
pH=-lg[H+]=-lg(2*10^-2)=-lg2+2=-0.301+2=1.699
n(HCl)=0.2*0.15=0.03 моль
n(NaOH)=0.1*0.1=0.01моль
NaOH+HCl=NaCl+H2O
n1(HCl) =0.03-0.01=0.02моль=2*10^-2
pH=-lg[H+]=-lg(2*10^-2)=-lg2+2=-0.301+2=1.699