Titrating acids against bases Flashcards
What is the predicted pH range for a titration of a strong acid against a strong base?
A jump from 3 to 10
What is a suitable indicator for a titration between a strong acid and a strong base?
Any indicator that has one colour at a pH of around 3 and another colour at a pH of around 10 will identify the endpoint.
Phenolphthalein, litmus, methyl orange
What is the predicted pH range for a titration of a strong acid against a weak base?
a jump from 3 to 7
What is a suitable indicator for a titration between a strong acid and a weak base?
methyl orange
What is a suitable indicator for a titration between a weak acid and a strong base?
phenolphthalein
What is the predicted pH range for a titration of a weak acid against a strong base?
a jump from 7 to 10
What is the predicted pH range for a titration of a weak acid against a weak base?
there is no sudden increase in the pH at any stage of the titration
What is a suitable indicator for a titration between a weak acid and a weak base?
There is no suitable indicator for this titration as there is no sudden increase in the pH at any stage of the titration. It is not possible to detect the endpoint using an indicator
How do you titrate a weak acid against a weak base?
The weak acid is titrated against a strong base and the weak base is titrated against a strong acid