MDCAT Chemistry MCQ #2792

What mass of NaOH (molar mass = 40 g/mol) is required to prepare 500 mL of 0.2 M solution?

MDCAT Chemistry MCQ #2792

  1. Question 1

    Q1. What mass of NaOH (molar mass = 40 g/mol) is required to prepare 500 mL of 0.2 M solution?

    • A) 4 g
    • B) 8 g
    • C) 2 g
    • D) 0.5 g

    Answer: 4 g

    Explanation: 0.5 L × 0.2 mol/L × 40 g/mol = 4 g. Option C halves volume incorrectly.