2NaOH+H2SO4=Na2SO4+2H2O
1)m(H2SO4)=m(раствора)*w(H2SO4)=245*0,1=24.5
2) n(H2SO4)=m(H2SO4)/M(H2SO4)=24.5/98=0.25
3) 2n(H2SO4)=n(NaOH)=0.25*2=0.5
4) m(NaOH)=n(NaOH)*M(NaOH)=40*0.5=20
5) m(раствора)=M(NaOH)/w(NaOH)=20/0.1=200
2NaOH+H2SO4=Na2SO4+2H2O
1)m(H2SO4)=m(раствора)*w(H2SO4)=245*0,1=24.5
2) n(H2SO4)=m(H2SO4)/M(H2SO4)=24.5/98=0.25
3) 2n(H2SO4)=n(NaOH)=0.25*2=0.5
4) m(NaOH)=n(NaOH)*M(NaOH)=40*0.5=20
5) m(раствора)=M(NaOH)/w(NaOH)=20/0.1=200