250mL0.1mol/L的盐酸中n(HCl)=0.25*0.1=0.025mol
m(HCl)=36.5*0.025=0.9125g
所以需37.5％的盐酸（密度1.19g/cm3）的体积 V=0.9125/(1.19*37.5%)=2.04ml