CHEM 1C Lecture Notes - Lecture 10: Bromic Acid, Acid Strength, Oxidation State

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The stronger the bond (h-x), the weaker the acid (x-) Hf << hcl < hbr < hi. The o-h bond will be more polar and easier to break if: Z is in a high oxidation state: oxoacids having different central atoms (z) that are from the same group and that have the same oxidation number, acid strength increases with increasing electronegativity of z. Hclo3> hbro3: oxoacids having the same central atom (z) but different numbers of attached groups, acid strength increases as the oxidation number of z increases. When dissolved in water, a strong acid almost completely (~100%) dissolves into. 7 strong acids: hcl, hi, hbr, hclo4, hclo3, h2so4, hno3. When dissolved in water, a weak acid only partially dissociates into h+ ions and anions. The stronger the acid, the weaker is its conjugate base. Ka is called the acid ionization constant. It is often useful to express the values of ka and kb in logarithmic form: