ANSWER : pH = 12.5
Consider dissociation of KIO 3 in water.
IO 3- (aq) + H2O (l) HIO
3 (aq) + OH - (aq)
We have, % dissociation = 100
Hence, = % dissociation
/ 100 = 1.860 / 100 = 0.0186
Now, [ OH -] = C
[ OH -] = 0.0186 1.70 = 0.03162
M
We have relation, [H+] [ OH -] = 10 -14
Therefore, [H+] = 10 -14 / [ OH
-] = 10 -14 / 0.03162 =
3.163 10
-13 M
We have, pH = -log [H+] = - log
3.163 10
-13 = 12.5
Potassium lodate is a chemical compound that can be used to prevent the thyroid gland from...