MDCAT Chemistry MCQ #2823

A 250 mL solution of 0.5 M HCl is diluted to 500 mL. What is the new concentration?

MDCAT Chemistry MCQ #2823

  1. Question 1

    Q1. A 250 mL solution of 0.5 M HCl is diluted to 500 mL. What is the new concentration?

    • A) 0.125 M
    • B) 0.25 M
    • C) 0.50 M
    • D) 1.00 M

    Answer: 0.25 M

    Explanation: C1V1 = C2V2. 0.5 × 250 = C2 × 500 → C2 = 0.25 M. Option D assumes doubling volume halves concentration incorrectly.