According to Henderson–Hasselbalch Equation,
pH = pKa + log [CH₃COO⁻] / [CH₃COOH]
As,
Ka of Acetic Acid = 1.8 × 10⁻⁵
pKa = -log Ka
pKa = -log 1.8 × 10⁻⁵
pKa = 4.74
So,
pH = 4.74 + log [0.85] / [0.45]
pH = 4.74 + log 1.88
pH = 4.74 + 0.276
pH = 5.01
The answer choices:
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[B]: rusting iron ; AND:
[D]: rubbing a marker on paper;
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are BOTH examples of a chemical reaction.
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Note: Rusting iron is, more specifically, a "redox" (or, "oxidation/reduction") reaction.
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Answer:
A. Steel
Explanation:
Steel is a mixture of iron and carbon fused together with one or more other metals or nonmetals. Because steel is a mixture rather than a chemical compound, steel does not have a set chemical compound formula.
Answer: A magnifying glass uses a convex lens, which is a converging lens to produce an image. The image produced is upright, magnified and virtual as long as the object is at or within the focal length of the lens.
The answer to the question <u>Which conclusion can be made from Gay-Lussac's law</u> is For a constant volume, the pressure of a gas is directly proportional to the temperature in Kelvin
Gay-Lussac's law shows the relationship between the pressure of a fixed mass of gas and its temperature in Kelvin.
It states that for a constant volume, the pressure of a gas is directly proportional to the temperature in Kelvin.
Mathematically, P ∝ T
P = kT
So, the answer to the question <u>Which conclusion can be made from Gay-Lussac's law</u> is For a constant volume, the pressure of a gas is directly proportional to the temperature in Kelvin
Learn more about Gay Lussac's law here:
brainly.com/question/24002551