Chem questijon dealing with pH?
The pH at the stoichiometric point is 7.00 (at 25*C) for a strong acid ( analyte) - strong base (titrant) titration, but it is greater than 7.00 for a weak acid - strong base. Explain
Answer:
strong acid and strong base dissociate equally or almost equally in water and hence neutralize each other completely.
in the case on weak acid and strong base,the strong base dissociates almost completely and the weak acid dissociates only partially hence acid-base neutralization is only partial and the strength of the base predominates in the solution.hence there will be more hydroxyl ions than hydronium ions in the solution,therefore it will have a pH>7.00
strong base destroys all weak acid and thus pH becomes greater than 7.00
More Questions and Answers:
What career can I have with Chemistry (and Biology,perhaps)? I'm going to univ next year and I'm in a quandary
Balancing RedOx Reactions in Acidic or Basic Aqueous Solution?
I am confused about the difference between internal energy and enthalpy!?
What are the unique properties of matter?
Why is it that no matter what color bubble bath you use the bubbles are always white?
Chemical buildup in pool?
For which of the following acids would a 1.00 M solution have the lowest pH ( highest H+ concentration)?
Lithium reacts with water?
Organic reaction?
Answer:
strong acid and strong base dissociate equally or almost equally in water and hence neutralize each other completely.
in the case on weak acid and strong base,the strong base dissociates almost completely and the weak acid dissociates only partially hence acid-base neutralization is only partial and the strength of the base predominates in the solution.hence there will be more hydroxyl ions than hydronium ions in the solution,therefore it will have a pH>7.00
strong base destroys all weak acid and thus pH becomes greater than 7.00
The answers post by the user, for information only, FunQA.com does not guarantee the right.
More Questions and Answers: