Chemistry NMDCAT MCQs Moles and Avogadro's Numbers Moles and Avogadro’s Numbers
nmdcat.online July 2, 2026

During the reaction 2Na + 2H₂O → 2NaOH + H₂, complete reaction of 4.6 g sodium produces hydrogen equal to

A. 0.05 mole
B. 0.10 mole
C. 0.20 mole
D. 0.40 mole

📝 Explanation

4.6 g Na equals 0.2 mole. According to the equation, 2 moles Na produce 1 mole H₂. Thus, 0.2 mole Na produces 0.1 mole H₂.

📖 Additional Information

  • 0.05 mole
  • 0.10 mole
  • 0.20 mole
  • 0.40 mole

4.6 g Na equals 0.2 mole. According to the equation, 2 moles Na produce 1 mole H₂. Thus, 0.2 mole Na produces 0.1 mole H₂.

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