MHT CET Medical202621 April 2026Evening ShiftChemistryAlcohols Phenols and EthersActual
Identify the amount of Dihydrogen formed when 46 g Na (molar mass = 23 g mol ⁻¹ ) reacts with excess ethanol.
Options
- A1 2 mole
- B1 mole
- C1 4 mole
- D1 8 mole
Correct answer
B. 1 mole
Step-by-step solution
Number of moles of Na = 46 23 = 2 moles. The balanced chemical equation for the reaction of sodium with ethanol is: 2 C ₂ H ₅ OH + 2 Na 2 C ₂ H ₅ ONa + H ₂ From the stoichiometry of the reaction, 2 moles of Na react with excess ethanol to produce 1 mole of dihydrogen ( H ₂ ). Since 2 moles of Na are given, the amount of dihydrogen formed is 1 mole. Answer: 1 mole