question 18 (essay worth 8 points)\n(08.04 mc)\nwhat are the limitations of litmus paper and phenolphthalein…

question 18 (essay worth 8 points)\n(08.04 mc)\nwhat are the limitations of litmus paper and phenolphthalein indicators? name two other indicators that can be used that do not have such limitations.
Answer
Brief Explanations:
Litmus paper only gives a general acidic - basic indication and doesn't show exact pH values. Phenolphthalein is only useful in a certain pH range (above about 8.2 it's pink, below it's color - less). Universal indicator and bromothymol blue can give more detailed pH - related color changes over a wider range.
Answer:
Limitations of litmus paper: Gives only general acidic - basic indication, not exact pH. Limitations of phenolphthalein: Only useful in a specific pH range. Other indicators: Universal indicator, bromothymol blue.