Aqueous sulfurous acid (H2SO3) was made by dissolving 0.200 L of sulfur dioxide gas at 19°C and 745 mmHg in water to yield 500.0 mL of solution. The acid solution required 16.4 mL of sodium hydroxide solution to reach the titration end point. What was the molarity of the sodium hydroxide solution? M NaOH

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**Chemistry Problem - Titration Calculation**

**Question:**

Aqueous sulfurous acid (H₂SO₃) was made by dissolving 0.200 L of sulfur dioxide gas at 19°C and 745 mmHg in water to yield 500.0 mL of solution. The acid solution required 16.4 mL of sodium hydroxide solution to reach the titration end point. What was the molarity of the sodium hydroxide solution?

**Answer Box:**
\[ \Box \, M \, \text{NaOH} \] 

**Hints for Solving the Problem:**

1. Convert the volume of sulfur dioxide gas to moles using the ideal gas law.
2. Determine the initial concentration of sulfurous acid given its dissociation.
3. Use the titration formula to calculate the molarity of the NaOH solution:
   \[
   M_1V_1 = M_2V_2
   \]
   where \( M_1 \) and \( M_2 \) are the molarities and \( V_1 \) and \( V_2 \) are the volumes of the acid and base, respectively.

Note: Ensure the units are consistent when performing calculations.
Transcribed Image Text:**Chemistry Problem - Titration Calculation** **Question:** Aqueous sulfurous acid (H₂SO₃) was made by dissolving 0.200 L of sulfur dioxide gas at 19°C and 745 mmHg in water to yield 500.0 mL of solution. The acid solution required 16.4 mL of sodium hydroxide solution to reach the titration end point. What was the molarity of the sodium hydroxide solution? **Answer Box:** \[ \Box \, M \, \text{NaOH} \] **Hints for Solving the Problem:** 1. Convert the volume of sulfur dioxide gas to moles using the ideal gas law. 2. Determine the initial concentration of sulfurous acid given its dissociation. 3. Use the titration formula to calculate the molarity of the NaOH solution: \[ M_1V_1 = M_2V_2 \] where \( M_1 \) and \( M_2 \) are the molarities and \( V_1 \) and \( V_2 \) are the volumes of the acid and base, respectively. Note: Ensure the units are consistent when performing calculations.
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