MDCAT Chemistry MCQ #109

A 100 mL solution of 0.25 M ethylene glycol (C2H6O2) is diluted to 500 mL. What is the new molarity?

MDCAT Chemistry MCQ #109

  1. Question 1

    Q1. A 100 mL solution of 0.25 M ethylene glycol (C2H6O2) is diluted to 500 mL. What is the new molarity?

    • A) 0.05 M
    • B) 0.10 M
    • C) 0.50 M
    • D) 1.00 M

    Answer: 0.05 M

    Explanation: M1V1 = 0.25 × 0.1 = 0.025. M2 = 0.025 / 0.5 = 0.05 M. Option B uses 0.25 / 0.5 = 0.50 directly.