Problem: A 2.0 L buffer solution contains 0.100 M cesium nitrite, CsNO2, with 0.300 M nitrous acid, HNO2. Determine the pH of the buffer solution after the addition of 150.0 mL of 0.200 M HClO3. The pKa of HNO2 is 3.34. 

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A 2.0 L buffer solution contains 0.100 M cesium nitrite, CsNO2, with 0.300 M nitrous acid, HNO2. Determine the pH of the buffer solution after the addition of 150.0 mL of 0.200 M HClO3. The pKa of HNO2 is 3.34. 

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