A 25.03-mL aliquot of the original unknown HCl solution is diluted with deionize

Question

A 25.03-mL aliquot of the original unknown HCl solution is diluted with deionized water to a
volume of 249.7 mL using the calibrated volumes of volumetric pipette and volumetric flask,
respectively. This solution was then mixed well and used to fill the buret. A titration of 0.3079 g of THAM (121.14g/mol) was weighed out and dissolved in 50 mL of deionized water, and bromocresol green indicator was added. A distinct color-change was noticed after 22.71 mL of the HCl titrant had been added to the solution. What was the concentration of the original unknown solution?

Explanation / Answer

The concentration of the original unknown solution is xHCl (mol/L).

After dilution it is

     x

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