Titrations

Can you use methyl orange and phenolphthalein fro weak acid weak base titrations?

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2011-03-03 04:47:52
2011-03-03 04:47:52

first of all remember that titr'n b/w weak acid and weak base is impossible.

weak acid*strong base-phenolphthalein

str acid*weak base-methyl orange

if both are strong can use both.

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Related Questions


No, both are indicators of ACID or BASE

This is so since the pH at the end point of Phenolphthalein is 9.1 and methyl orange is 3.7. For a strong acid strong base titration which the end point is between 3-11 phenolphthalein is used

Phenolphthalein Methyl Orange Litmus Bromophenol Blue

Acid-base titrations are usually conducted with an indicator. Indicators are used to measure the end point precisely. Some of common indicators are methyl red, methyl orange and bromothymol blue.

Yes you can use methyl red, methyl orange, bromophenol blue and other indicators instead of phenolphthalein in the acid-base titration of NaOH.

You could mix an acid or alkali with an indicator such as methyl orange or phenolphthalein. Phenolphthalein is colorless in an acidic medium and pink in an alkaline one.

Burette Methyl orange Phenolphthalein Pipette

litmus paper, methyl orange, phenolphthalein, turmeric juice, red-cabbage juice.

An acid-base indicator. Some examples are phenolphthalein and methyl orange.

Litmus paper: Acid: Red Alkali: Blue Methyl Orange: Acid: Orange Alkali: Yellow Phenolphthalein: Acid: Colorless Alkali: Pink/Purple

indicators for acid :- methyl yellow, methyl orange, bromophenol blue. indicators for base :- phenolphthalein, nile blue, thymolphthalein.

discussion for the titration of NaOH and HNO3 by using phenolphthalein & methyl orange indicators

Methyl Red, methyl orange, bromophenol blue, phenolphthalein, thymolphthalein, bromocresol green, bromothymol blue are all used as acid base indicators.

IN ACID: it turns methyl orange pink In base: it turns methyl orange yellow

Methyl orange is a pH indicator frequently used in titrations. It is often chosen to be used in titrations because of its clear colour change. Because it changes colour at the pH of a mid-strength acid, it is usually used in titrations for acids. Unlike a universal indicator, methyl orange does not have a full spectrum of colour change, but has a sharper end point. Check out the Related Link for more details.

Acid base indicators are used to identify acids and bases. Among the common indicators are;PhenolphthaleinMethyl redMethyl orangeBromothymol blue

All acidic solutions are colourless in phenolphthalein, pink in methyl orange solution and turns blue litmus paper into red.

It depends on the acid or base used. For strong acid vs. strong base, phenolphthalein can be used as indicator. For strong acid vs. weak base, methyl orange can be used as indicator. For weak acid vs. strong base, phenolphthalein can be used as indicator.

It depends on the indicator and there are quite a few. Methyl Red, Methyl orange and Phenolphthalein are 3 such acid-base indicators. If phenolphthalein is used as the indicator and added to the base it would immediately turn red/pink. As acid is titrated in, the red/pink will disappear and go colorless.

acid base indicator or pH indicatorSome examples of acid base indicators are: gentian violet, malachite green, thymol blue, methyl yellow, bromophenol blue, congo red, methyl orange, screened methyl orange, bromocresol green, methyl red, methyl purple, phenolphthalein, indigo carmine, hydrangea flowers, anthocyanin, litmus, red cabbage, and purple cauliflower.

Methyl orange turns pink/red in acidic solution.

It depends on the base used. For strong acid vs. strong base, phenolphthalein can be used as indicator. For strong acid vs. weak base, methyl orange can be used as indicator.

Hydrochloric acid turns pink/red in the presence of methyl orange.

Phenolphthalein indicates the presence of an acid or base within substance. When there is a base present the phenolphthalein will create a pink to fuchsia color. When an acid is present the phenolphthalein will create a colorless to orange color.

The indicator is used to measure the end point of titration. Methyl red and phenolphthalein are frequently used indicators in acid-base titration. Potassium permanganate can used as a self indicator in redox titrations where applicable.


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