A mixture of He, Ne, and N2 gases has a pressure of 1.943 atm. If the pressures of He and Ne are 0.137 atm and 0.566 atm, respectively, what is the partial pressure of N2 in the mixture?A.0.703 atmB.1.943 atmC.1.24 atmD.0.151 atmSUBMITarrow_backPREVIOUS
Question
A mixture of He, Ne, and N2 gases has a pressure of 1.943 atm. If the pressures of He and Ne are 0.137 atm and 0.566 atm, respectively, what is the partial pressure of N2 in the mixture?A.0.703 atmB.1.943 atmC.1.24 atmD.0.151 atmSUBMITarrow_backPREVIOUS
Solution
Para resolver esta pregunta, utilizamos la ley de Dalton de las presiones parciales, que establece que la presión total de una mezcla de gases es igual a la suma de las presiones parciales de los gases individuales.
Dado:
- Presión total de la mezcla (P_total) = 1.943 atm
- Presión parcial de He (P_He) = 0.137 atm
- Presión parcial de Ne (P_Ne) = 0.566 atm
Queremos encontrar la presión parcial de N2 (P_N2).
La fórmula de la ley de Dalton es:
Sustituimos los valores conocidos:
Para encontrar , restamos las presiones parciales de He y Ne de la presión total:
Realizamos la resta:
Por lo tanto, la presión parcial de N2 en la mezcla es:
La respuesta correcta es C.
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