For the titration of a strong acid with a strong base, which of the following indicators would be most suitable?bromomethyl blue, pH range 6.0–7.6bromocresol green, pH range 3.8–5.4methyl orange, pH range 3.1–4.4methyl red, pH range 4.2–6.3Submit answer
Question
For the titration of a strong acid with a strong base, which of the following indicators would be most suitable?bromomethyl blue, pH range 6.0–7.6bromocresol green, pH range 3.8–5.4methyl orange, pH range 3.1–4.4methyl red, pH range 4.2–6.3Submit answer
Solution
The titration of a strong acid with a strong base has an equivalence point at a pH of 7. Therefore, the most suitable indicator would be the one with a pH range that includes 7.
Looking at the options:
- Bromomethyl blue has a pH range of 6.0–7.6.
- Bromocresol green has a pH range of 3.8–5.4.
- Methyl orange has a pH range of 3.1–4.4.
- Methyl red has a pH range of 4.2–6.3.
From these options, bromomethyl blue is the most suitable indicator for the titration of a strong acid with a strong base because its pH range includes 7.
Similar Questions
WHICH OF THE FOLLOWING IS USED AS AN INDICATOR IN THE TITRATION OF A STRONG ACID AND A WEAK BASE?a.Phenolphthaleinb.Methyl orangec.Fluoresceind.Thymol blue
The best indicator for the detection of end point in titration of a weak acid and a strong base is :-Methyl orange (3.1 to 4.4)Methyl red (4.2 to 6.3)Bromothymol blue (6 to 7.6)Phenolphthalein (8.2 to 10)
In the titration between a strong acid and a weak base methyl orange may be suitable as an indicator.
For the titration of a strong acid with a strong base, the equivalence point at which base completely neutralizes the acid has a pH of 7.0. Select and justify your choice of an indicator that will allow you to visually determine the equivalence point.
The commonly used indicators for the titration of the mixture of strong and weak bases against astrong acid are the following exceptA. PhenolphthaleinB. Methyl redC. Alizarin blueD. Methyl orange
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