What color would a bromocresol green solution be at ph=7 ?

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Jrorockets1929 Jrorockets1929

08-04-2018
Chemistry

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What color would a bromocresol green solution be at ph=7 ?

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transitionstate transitionstate · Answer 1 · 2018-04-18T18:08:28+02:00

Bromocresol Green belongs to a class of dyes called as Sulfonephthaleins. This dye imparts different colours at different pH's.

Colors at different pH:
Bromocresol Green has a transition pH range between 3.8 and 5.4.

Color Below pH 3.8:
Bromocresol Green imparts Yellow color below pH 3.8.

Color Above pH 5.4:
Bromocresol Green imparts Blue color above pH 5.4.

Due to different colors at different pH this compound is used at Indicator in quantitative analysis techniques like Titration.

Result:
Bromocresol Green will give Blue color at pH 7.

okpalawalter8 okpalawalter8 · Answer 2 · 2022-03-18T13:35:53+01:00

Bromocresol Green will give a Blue color at a pH of 7

What color would a Bromocresol green solution be at ph=7?

Generally, Bromocresol Green Relates to a type of dyes named Sulfonephthaleins.

Bromocresol Green has different colors at different pH ranges, it colors as

Bromocresol Green at 3.8 and 5.4. +transition pH range

Bromocresol Green at 0-3.8= Yellow color

Bromocresol Green at 5.4-7 Blue color

Therefore, at a pH of 7 Bromocresol Green will give Blue color.