Ответ: n(HCl)=0.2*0.15=0.03 мольn(NaOH)=0.1*0.1=0.01мольNaOH+HCl=NaCl+H2On1(HCl) =0.03-0.01=0.02моль=2*10^-2pH=-lg[H+]=-lg(2*10^-2)=-lg2+2=-0.301+2=1.699