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GREYUIT [131]
2 years ago
9

When an ionic compound is placed in water, the positive end of the water molecule is attracted to the cation (+) of the ionic co

mpound.
Chemistry
1 answer:
Pani-rosa [81]2 years ago
3 0

Answer:

what's the question?I can't answer without a question

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Which of the following chemical symbols represents the element silver?
Ierofanga [76]
B.Ag from the latin Argentum
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3 years ago
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Determine el PH y el % de disociación de una solución de ácido débil, sabiendo que se disuelven 20 gramos del ácido (masa molar=
IceJOKER [234]

Answer:

pH = 4.27. Porcentaje de disociación: 0.03%

Explanation:

El pH de un ácido débil, HX, se obtiene haciendo uso de su equilibrio:

HX(aq) ⇄ H⁺(aq) + X⁻(aq)

Donde la constante de equilibrio, Ka, es

Ka = 1.65x10⁻⁸ = [H⁺] [X⁻] / [HX]

Como los iones H⁺ y X⁻ vienen del mismo equilibrio podemos decir:

[H⁺] = [X⁻]

[HX] es:

20g * (1mol/55g) = 0.3636moles / 2.100L = 0.1732M

Reemplazando es Ka:

1.65x10⁻⁸ = [H⁺] [H⁺] / [0.1732M]

2.858x10⁻⁹ = [H⁺]²

5.35x10⁻⁵M = [H⁺]

pH = -log[H⁺]

<h3>pH = 4.27</h3>

El porcentaje de disociacion es [X⁻] / [HX] inicial * 100

Reemplazando

5.35x10⁻⁵M / 0.1732M * 100

<h3>0.03%</h3>
5 0
2 years ago
...................................................................
neonofarm [45]

Answer:

Imao ;/

Explanation:

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What would be the number of oxygen atoms in 5.00 moles of co2?
malfutka [58]
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g

Explanation:

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