By mixing 15.00ml of 0.800m HIO3 (pka = 0.77) with 45.00ml of 0.0200 m NaOh gives a pH = -0.32
The balanced acid-base reaction equation between iodic acid and NaOH is
HIO3 + NaOH -> H20 + NaIO3
What are the functions of buffer system?
In an aqueous solution, a weak Bronsted acid reversibly dissociates to produce weak conjugate bases and hydrogen ions.
The hydrogen ion molarity in the solution and the conjugate pair's molar ratio are related by the K an expression of the weak acid.
The molar ratio will be shifted more in favour of the weak conjugate base if a tiny amount of strong base is added to the weak acid solution. A buffer solution will be produced as a result of the pH of the solution shifting upward.
Hence the pH value is -0.32
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