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Why is methyl orange not suitable indicator for H{eq}_2{/eq}C{eq}_2{/eq}O{eq}_4{/eq} and NaOH?

Question:

Why is methyl orange not suitable indicator for H{eq}_2{/eq}C{eq}_2{/eq}O{eq}_4{/eq} and NaOH?

Acid-Base Indicators:

Acid-base indicators are compounds which drastically change in color depending on the pH of its environment. Examples of acid-base indicators are phenolphthalein (8.3-10), methyl orange (3.1-4.4), and cresol range (0.2-1.8), among others. In choosing the appropriate indicator for a titration, it is important to note the pH at the equivalence point of the reaction.

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Methyl orange is an indicator with a pH range of 3.1-4.4. It is not a suitable indicator for the neutralization reaction between the weak acid...

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Acid-Base Indicators: Uses & Examples

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Chapter 21 / Lesson 3
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Acid-base indicators are substances that change color at a certain pH, indicating the presence of an acid or base. Discover the uses and examples of acid-base indicators in soil testing, swimming pools, pollution, and household substances.


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