Answer:
Percent dissociated = 3.92%
Explanation:
The equilibrium of the weak acid, HA, is:
HA ⇄ H⁺ + A⁻
<em>Where Ka = 8x10⁻⁴ is: [H⁺] [A⁻] / [HA]</em>
<em> </em>
As both H⁺ and A⁻ comes from the same equilibrium we can write the concentrations of the species as follows:
[H⁺] = X
[A⁻] = X
[HA] = 0.50M - X
<em>Where X is reaction coordinate</em>
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Replacing:
8x10⁻⁴ = X² / 0.50-X
4x10⁻⁴ - 8x10⁻⁴X - X² = 0
Solving for X:
X = -0.02M. False solution. There is no negative concentrations
X = 0.0196M. Right solution.
Replacing:
[A⁻] = 0.0196M
Percent of the acid that is dissociated is:
[A⁻] / [HA]₀ * 100
<em>[HA]₀ is its initial concentration = 0.50M</em>
0.0196M / 0.50M * 100
<h3>Percent dissociated = 3.92%</h3>
Answer:
things like hair color, eye color, skin color, size of lips, curly or straight hair, are things that could be passed down to an offspring. Things like tattoos wont be passed down.
Explanation:
things like hair color, eye color, etc. get passed down because those are inheritable traits and things like tattoo aren't.
Answer: strongly acidic
Explanation: a strongly acidic solution has a pH between one and four
Answer:
Why do we all not know the answer to this on the practical
Explanation: