Stronger Acids: Predicting Acid Strength
To determine which acid is stronger, we need to compare the electronegativities of the central atoms. Sulfur (S) has a higher electronegativity than selenium (Se), so H₂SO₃ is the stronger acid. Similarly, H₂SeO₄ has more oxygen atoms, making it more electronegative and stronger than H₂SeO₃.
Explanation:
In the given pairs of acids, we need to predict which acid is stronger. In order to determine this, we can compare the electronegativities of the central atoms. The acid with the more electronegative central atom will be stronger.
a. H₂SO₃ or H₂SeO₃:Sulfur (S) has a higher electronegativity than selenium (Se), so H₂SO₃ is the stronger acid in this pair.
b. H₂SeO₄ or H₂SeO₃:Both acids have selenium (Se) as the central atom. However, H₂SeO₄ has more oxygen atoms bonded to the central atom, making it more electronegative and therefore the stronger acid compared to H₂SeO₃.
Understanding the electronegativities of the central atoms can help us predict and determine the strength of acids in chemical reactions. Knowing which acid is stronger can provide valuable insights for various applications in chemistry and industry.