## How does the strength of an acid affect the titration curve?

In the case of a weak acid, for example, the initial pH is likely to be higher, so the titration curve starts higher. Further, the weaker the acid, the stronger will be its conjugate base, so the higher will be the pH at the equivalence point. These two factors raise the bottom part of the titration curve.

What is the difference between a titration of a strong acid with a strong base?

For the titration of a strong acid with a strong base, the curve begins acidic and then turns basic after the equivalence point, which occurs at pH = 7. For the titration of a strong base with a strong acid, the curve is similar except that it begins basic and turns acidic.

Why the titration curves for strong acids bases have a different shape than titrations of weak acids bases?

The titration of either a strong acid with a strong base or a strong base with a strong acid produces an S-shaped curve. The curve is somewhat asymmetrical because the steady increase in the volume of the solution during the titration causes the solution to become more dilute.

### Which curve is that of a weak acid?

Weak acid/strong base titration curve The following titration curve is characteristic of a weak acid (pKa = 5.0) and strong base titration. The initial pH of the solution indicates a weakly acidic solution. A strong base is the titrant as the large, final pH indicates.

What do titration curves tell us?

Titration curves show how the pH of the solution changes as a known chemical is added to the solution, so any point along the curve gives you information on solution pH as the volume of the known chemical increases.

Why is the equivalence point difference for strong and weak acids?

In a strong acid-strong base titration, the equivalence point is reached when the moles of acid and base are equal and the pH is 7. In a weak acid-strong base titration, the pH is greater than 7 at the equivalence point. In a strong acid-weak base titration, the pH is less than 7 at the equivalence point.

#### In what way is the titration curve for a weak base strong acid titration similar to the titration curve for a weak acid-strong base titration?

In what way is the titration curve for a weak base-strong acid titration similar to the titration curve for a weak acid-strong base titration? Both have a buffer region before the equivalence point is reached.

Which comparison of strong and weak acids is correct?

1) Strong acids have a lower pH than weak acids.

Is best indicator used in titration of strong acid and weak base?

Choice of Indicators

Types of titration Indicators
Strong acid-strong base Phenolphthalein is usually preferred because of its more easily seen colour change.
Weak acid-strong base Phenolphthalein is used and changes sharply at the equivalence point and would be a good choice.