#sf(H_2SO_4+2NaOHrarrNa_2SO_4+2H_2O)#
#sf(n_(H_2SO_4)=cxxv=0.1xx24.7/1000=2.47xx10^(-3))#
#:.##sf(n_(NaOH)=2.47xx10^(-3)xx2=4.94xx10^(-3))#
#sf(c=n/v)#
#:.##sf(v=n/c)#
#:.##sf(v_(NaOH)=(4.94xx10^(-3))/(0.5)=9.88xx10^(-3)color(white)(x)L)#
#sf(v_(NaOH)=9.9color(white)(x)ml)#