A laboratory technician needs to make 500.0mL of a 0.100mol/L sulfuric acid solution. What volume of 16.0 mol/L sulfuric acid does the technician need to use?
mLa x Ma = mLb x Mb
mLa x 16.0 = 500.0 x 0.100
Solve for mLa. Add about 250 mL, more or less, into a 500 mL volumetric flask. Pipet the calculated volume of H2SO4 from above, SLOWLY and with swirling, into the flask. It will get hot. You may need to let it cool to keep it from boiling. After all of the H2SO4 has been added, let the solution cool, then make to the mark on the flask with distilled water. Stopper, mix thoroughly, label. It is important to add the H2SO4 to the water and NOT the other way around.