I have a solution of 1,2,4,5 - tetrachlorobenzene, and 1,4-dibromobenzene dissolved in HCl that I need to separate through crystallization. This is what is available to me: 1.0 M NaOH, 6.0 M NaOH, 1.0 M HCl, 6.0 M HCl, 1M NaHCO3, saturated aqueous sodium chloride, dichloromethane, ethyl acetate, 95% ethanol, methanol, isopropyl alcohol, acetone, hexane, and toluene. How would I perform the crystallization?