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Acids, bases and titration — Question 5

QCAA 2025, Paper 1 · 1 mark

Q5 · 2025 · Paper 1Unclassified1 mark

QUESTION 5

A 25.00 mL aliquot of aqueous potassium hydroxide (KOH) solution was titrated against an aqueous solution of 0.100 M hydrochloric acid (HCl). It took 17.45 mL of HCl to reach the equivalence point. Determine the concentration of the KOH(aq) solution.

(A) 2.29 × 10−1 M

(B) 1.43 × 10−1 M

(C) 6.98 × 10−2 M

(D) 4.36 × 10−5 M

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