Answer:
pH = 4,70
Explanation:
For bromocresol, as HX is yellow and X⁻ is blue, the indicator will be a perfect green color when HX = X⁻.
Using Henderson-Hasselbalch formula:
pH = pka + log [X⁻]/[HX] <em>(1)</em>
Where pka is -log ka = -log2,0x10⁻⁵ = 4,70
As HX = X⁻, [HX] / [X⁻] = 1
Replacing in (1):
pH = 4,70 + log 1
pH = 4,70 + 0
<em>pH = 4,70</em>
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I hope it helps!
Answer:
Statement about scientific explanations is true :
C. II, III and IV only
For the answer to the question above asking what mass will the balance report for the cylinder of iron if a <span>cylinder of iron has a mass of 23.45 g. If it is placed on an electronic balance that reports all masses 18.00% too low due to miscalibration,
</span>A cube has a volume of 8.0 cm3 and a mass of 21.6 grams
Using an electronic analytical balance of graduated cylinder.
The density of iron is 7.87 g/mL.
5.0=mo(1/2) ^ 5
5.0=mo (.031)
about 160/161.29
Answer:
Hello
Explanation:
Can you pls tell me which language is this.... Sorry... But pls tell me it in English
