Physical Chemistry 1 Quiz
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In a solution containing 0.05 M Na₂SO₄, the mean ionic activity coefficient is found to be 0.544. If an additional 0.02 M NaCl is added to this solution (assume no volume change), and the new mean ionic activity coefficient for Na₂SO₄ becomes 0.445 due to increased ionic strength, what is the percent change in the activity of Na₂SO₄?
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