Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NEETChemistryRedox Reactions

How many moles of electrons are transferred when 4 moles of sodium (Na) react completely 2 Na(s) + H 2 (g) → 2 NaH (s) ?

Options

  1. A1 mole
  2. B2 moles
  3. C4 moles
  4. D8 moles

Correct answer

C. 4 moles

Step-by-step solution

For each mole of sodium reacting, 2 moles of electrons are transferred. Therefore, for 4 moles of sodium, 4 x 2 = 8 moles of electrons are transferred.

Practice Redox Reactions on Quantrex Academy →

More from Redox Reactions

Calculate the oxidation number of sulfur in H ₂ SO ₄ . 2026Consider the following compounds : K O ₂, H ₂ O ₂ and H ₂ S O ₄ The oxidation state of the underlined elements in them are respectively, 2026What is the oxidation number of phosphorus in Mg ₂ P ₂ O ₇ ? 2026Identify oxidant and reductant, respectively, in the following reaction: Zn (s) + Cu ²⁺(aq) Zn ²⁺(aq) + Cu (s) 2026Which of the following is true regarding oxidation? 2026In a reaction, 2 H ₂ S + SO ₂ 2 H ₂ O + 3 S Identify the substance oxidized. 2026Predict the oxidation number of of 'C' in K ₂ C ₂ O ₄ and in CH ₂ Cl ₂ . 2026The oxidation process involves 2026 Full Redox Reactions list All NEET PYQs