Question

How many moles of hydrogen are liberated when \(6\) moles of ethyl alcohol reacts with sodium metal?

• A. \(2\)
• B. \(3\)
• C. \(4\)
• D. \(6\)

Hint:

Two moles of ethanol give one mole of hydrogen with sodium.

Answer 1

The Correct Option is B

Step 1: Idea:
Each ethanol loses only its O-H hydrogen. Two hydrogen atoms pair up to make one $\text{H}_2$ molecule.

Step 2: Count:
6 mol ethanol means 6 mol of replaceable H. Hydrogen gas needs 2 H atoms per molecule, so moles of $\text{H}_2 = 6/2 = 3$.

Final Answer:
Three moles of hydrogen are liberated, option (B). \[ \boxed{3\ \text{mol}} \]