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liberstina [14]
3 years ago
14

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

Chemistry
1 answer:
Sliva [168]3 years ago
8 0
Bromocresol Green belongs to a class of dyes called as <span>Sulfonephthaleins. This dye imparts different colours at different pH's.

Colors at different pH:
</span>                                   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.
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ivann1987 [24]
Remember that HCl is a strong acid will dissociate almost 100%
HCl + H₂O --> H₃O⁺ + Cl⁻

pH = -log[H₃O⁺]
pH = -log(0.045) = 1.35

(The rules for sig figs are that if you take the log of a number with x significant figures, then the result should have x significant decimal places.)

The pH is 1.35
4 0
4 years ago
A flexed bow has __________ energy. The energy is due to its ____________. When the string is released, work will be done to the
Phoenix [80]

Answer:

its not c or d because we know nothing will happen to the bow- so its up to a and b- making the answer b :V

Explanation:

3 0
3 years ago
A 0.500-l sample of gas is at a pressure of 625 mm hg. what must the pressure be (in atm), at constant temperature, if the volum
Gemiola [76]
Since temperature is held constant; Boyle's law can be expressed as: P 1 * V 1 = P 2 * V 2  
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3 0
3 years ago
The coordination sphere of a complex consists of ________. The coordination sphere of a complex consists of ________. the ligand
sammy [17]

Answer:

The coordination sphere of a complex consists of <u><em>the central metal ion and the ligands bonded to it.</em></u>

Explanation:

The Coordination Compounds are sets of a central metal ion attached to a group of molecules or ions that surround it. They are also called metal complexes or simply complexes. Then they are compounds that have a central atom surrounded by a group of molecules or ions, the latter called ligands.

The central atom must have empty orbitals capable of accepting pairs of electrons, with the transition metals being the ones with the greatest tendency. Because of this, they can act as Lewis acids (electron pair acceptors). The ligands have unshared electron pairs, then acting as Lewis bases (electron pair donors).

When forming a complex, it is said that the ligands coordinate to the metal and the central metal and the ligands attached to it constitute the coordination sphere of the complex.

Finally, <u><em>the coordination sphere of a complex consists of the central metal ion and the ligands bonded to it.</em></u>

5 0
3 years ago
If there are 1,000 mg in 1<br> gram. Then how many mg are<br> in 2.5 grams?
mihalych1998 [28]

Answer:

1 gram =1000mg

Explanation:

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2500mg

7 0
3 years ago
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