Actually, that is not quite right. The best indicator to use for a titration is one which the equivalence point (pH) falls into the range - preferably the middle - of the indicator. In this case, the bromothymol blue would be ideal, because it would change colour when the pH equals about 7. The phenolphthalein won't even start to change colours.zwtipp05 said:My guess would be that since 7 falls inside the range for the blue you would have to stop the titration while the color is still mixed. With phenolphthalein you stop when it completely changes color which makes it easier to obtain consistent results rather then trying to interpret the mix of colors.
Acid & base titration is a laboratory technique used to determine the concentration of an acid or base solution by measuring the volume of a known concentration of the opposite solution that is needed to neutralize it.
Acid & base titration is important because it allows scientists to accurately determine the concentration of an unknown acid or base solution, which is crucial for many scientific experiments and processes.
There are two main types of acid & base titration: strong acid-strong base titration and weak acid-strong base titration. In strong acid-strong base titration, both solutions are strong and completely dissociate in water. In weak acid-strong base titration, the acid solution is weak and does not completely dissociate in water.
The endpoint of acid & base titration is determined by using an indicator, a substance that changes color when the solution reaches a certain pH. Common indicators used in acid & base titration include phenolphthalein, methyl orange, and bromothymol blue.
Some sources of error in acid & base titration include inaccurate measurement of solutions, impurities in the solutions, and human error in determining the color change of the indicator. To minimize these errors, it is important to use precise measuring equipment and to perform multiple trials to ensure accurate results.