Answer:
pH = 2.
Explanation:
A weak acid is in equilibrium with its ions in a solution, so it must have an equilibrium constant (Ka). And, pKa = -logKa
Ka = 10⁻⁴
So, for CH₃COOH the equilibrium must be:
CH₃COOH(aq) ⇄ H⁺(aq) + CH₃COO⁻(aq)
1 M 0 0 Initial
-x +x +x Reacted
1-x x x Equilibrium
And the equilibrium constant:
![Ka = \frac{[H+]x[CH3COO-]}{[CH3COOH]}](https://tex.z-dn.net/?f=Ka%20%3D%20%5Cfrac%7B%5BH%2B%5Dx%5BCH3COO-%5D%7D%7B%5BCH3COOH%5D%7D)
Supposing x << 1:
10⁻⁴ = x²
x = √10⁻⁴
x = 10⁻² M, so the supposing is correct.
So,
pH = -log[H⁺]
pH = -log10⁻²
pH = 2
Answer:
Explanation:
Hello,
In this case, the information about the pressure, volume and temperature are enough to compute the mass of hydrogen assuming its ideal behavior:
The mass is:
Best regards.
Lettuce
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Leaf lettuce.
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Romaine lettuce.
Asparagus lettuce
<h3>Redox Half reaction</h3>
At cathode
Mn^+2 + 2e- → Mn (reduction)
At anode
Fe → Fe^+2 + 2e- (oxidation)
<h3>Overall reaction</h3>
Mn^+2 + Fe → Mn + Fe
<h3>
How can one determine whether a reaction is a redox in nature?</h3>
1) Identify the reducing and oxidizing agents. To do this, we must determine their oxidation numbers.2) For oxidation and reduction, write half-reactions. To equalize the charges on both sides, we use electrons. Get the redox reaction, third. (1) and (2) can be combined to produce the redox reaction. The balanced redox reaction shouldn't have any electrons from the half-reactions.
<h3>
What does the term "redox reaction" mean?</h3>
One species is reduced and another is oxidized in redox reactions. As a result, the species in question must shift in oxidation state. These reactions play a crucial role in the production and usage of energy in a variety of living systems, including humans and energy storage devices (batteries).
Learn more about redox reaction here:-brainly.com/question/28023605
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