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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: Mariposa on April 21, 2004, 02:36:07 PM

Title: pH of 40% (NH3)2SO4 in 1M H2SO4
Post by: Mariposa on April 21, 2004, 02:36:07 PM

 I do not know where to ask this question and I need to know how to find this pH

Title: Re:pH of 40% (NH3)2SO4 in 1M H2SO4
Post by: AWK on April 22, 2004, 06:02:34 AM

You should know a molar concentration of (NH₄)₂SO₄ instead od percent concentration. Sulfuric acid will react with ammonium sulfate forming hydrogen ammonium sulfate and the final mixture will contain ammonium sulfate and hydrogen ammonium sulfate ((NH₄)₂SO₄ and NH₄HSO₄). This mixture will work as buffer solution based on the second acidity constant of sulfuric acid (quadratic equation!).