MDCAT Chemistry MCQ #57

A 0.1 mole sample of ethylene glycol reacts with an excess of sodium metal. What volume of hydrogen gas is evolved at STP?

MDCAT Chemistry MCQ #57

  1. Question 1

    Q1. A 0.1 mole sample of ethylene glycol reacts with an excess of sodium metal. What volume of hydrogen gas is evolved at STP?

    • A) 1.12 dm3
    • B) 2.24 dm3
    • C) 3.36 dm3
    • D) 4.48 dm3

    Answer: 2.24 dm3

    Explanation: Ethylene glycol is dihydric (2 -OH groups); 0.1 mol reacts with Na to release 0.1 mol H2 (2.24 dm3). 1.12 dm3 is for monohydric.