If 4.0 moles of NaOH react completely with excess CO2 according to the equation 2 NaOH + CO2 → Na2CO3 + H2O, how many moles of Na2CO3 can be produced?

• A. 1.0 mole
• B. 4.0 moles
• C. 2.0 moles
• D. 8.0 moles

Answer: (C)

Verified step by step guidance

1. Identify the balanced chemical equation: \$2 \text{NaOH} + \text{CO}_2 \rightarrow \text{Na}_2\text{CO}_3 + \text{H}_2\text{O}$.
2. Determine the mole ratio between NaOH and Na\(_2\)CO\(_3\) from the balanced equation. For every 2 moles of NaOH, 1 mole of Na\(_2\)CO\(_3\) is produced.
3. Given 4.0 moles of NaOH, use the mole ratio to find the moles of Na\(_2\)CO\(_3\) produced: \(\text{moles of Na}_2\text{CO}_3 = \frac{1}{2} \times 4.0\) moles of NaOH.
4. Calculate the moles of Na\(_2\)CO\(_3\) by multiplying the given moles of NaOH by the mole ratio factor.
5. Interpret the result as the number of moles of Na\(_2\)CO\(_3\) produced when 4.0 moles of NaOH react completely with excess CO\(_2\).