posted by Adeola on .
Predict whether the Ph endpoint is =7 >7, or<7 for each of the following acid-base titrations. Justify you predictions
a) hydroiodic acid with sodium hydroxide.
b)boric acid with sodium hydroxide
c) hydrochloric acid with magnesium hydroxide
d) hydrochloric acid with aqueous ammonia
Here is the way you know.
acid + base ==> salt + water.
If the acid is strong and the base is weak, the salt will be acidic and the equivalence point will be <7.
If the base is strong and the acid is weak, the salt will be basic and the equivalence point will be >7. If the acid is strong and the base is strong, the pH at the equivalence point will be 7.
For a. HI + NaOH ==> NaI + H2O.
HI is strong. NaOH is strong. Equivalence point will be 7.0