A scientist created a 450 mL of a 5M solution of LiF. If someone accidently added 800 mL of water to this solution then what was its new concentration? Question 6 options: 1.8 M 2.5 M 10 M 13.9 M 8.9 M 2.8 M
Question
A scientist created a 450 mL of a 5M solution of LiF. If someone accidently added 800 mL of water to this solution then what was its new concentration?
Question 6 options:
1.8 M
2.5 M
10 M
13.9 M
8.9 M
2.8 M
Solution 1
Para resolver este problema, debemos usar el concepto de dilución, que se puede expresar con la fórmula:
donde:
- es la concentración inicial de la solución.
- es el volumen inicial de la solución.
- es la concentración final de la solución.
- es el volumen final de la solución.
Primero, identifiquemos los valores dados:
- M
- mL
- mL = 450 mL + 800 mL = 1250 mL
Ahora, sustituimos estos valores en la fórmula para encontrar :
Resolviendo para :
Por lo tanto, la nueva concentración de la solución es 1.8 M.
La opción correcta es:
- 1.8 M
Solution 2
Para resolver este problema, debemos usar el concepto de dilución, que se puede expresar con la fórmula:
donde:
- es la concentración inicial de la solución.
- es el volumen inicial de la solución.
- es la concentración final de la solución.
- es el volumen final de la solución.
Primero, identifiquemos los valores dados:
- M
- mL
- mL = 450 mL + 800 mL = 1250 mL
Ahora, sustituimos estos valores en la fórmula para encontrar :
Resolviendo para :
Por lo tanto, la nueva concentración de la solución es 1.8 M.
La opción correcta es:
- 1.8 M
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