Chemistry NMDCAT MCQs Moles and Avogadro's Numbers Moles and Avogadro’s Numbers

nmdcat.online July 13, 2026

During the reaction 2Na + Cl₂ → 2NaCl, complete reaction of 5 moles of sodium produces

A. 2.5 moles of NaCl

B. 5 moles of NaCl

✓

C. 7.5 moles of NaCl

D. 10 moles of NaCl

📝 Explanation

The balanced equation shows a 2 : 2 ratio between Na and NaCl, which simplifies to 1 : 1. Therefore, 5 moles of Na produce 5 moles of NaCl. Concept tested: Mole ratio from a balanced equation.

📖 Additional Information

2.5 moles of NaCl
5 moles of NaCl
7.5 moles of NaCl
10 moles of NaCl

The balanced equation shows a 2 : 2 ratio between Na and NaCl, which simplifies to 1 : 1. Therefore, 5 moles of Na produce 5 moles of NaCl. Concept tested: Mole ratio from a balanced equation.

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