The concentration of commercial HCl is considered to be 12 M. I think it is more like 11.6 M but use either number you wish depending upon your definition of concentration of HCl. Then
mLa x Ma = mLb x Mb
mLa x 12 = 250 x 0.1
Solve for mLa. Than pipet that amount of concentration HCl into a 250 mL volumetric flask, add some distilled water to the flask, swirl somewhat, add distilled water to the mark on the volumetric flask, stopper, mix thoroughly, label.
Calculate the volume of conc .Hcl required for preparing 250ml 0.1M?
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