A 1.0000 g sample of K₂CO₃ (138.21 g/mol) is dissolved in enough water to make 250.0 mL of solution. A 25.00 mL aliquot is taken and titrated with 0.1000 M HCl:
K₂CO₃(aq) + 2 HCl(aq) → 2 KCl(aq) + H₂O(l) + CO₂(g)
How many mL of HCl are used?