10.El hielo seco es CO2 (s) a una temperatura inferior a 55°C y a 1 atm de presión. Una muestra de 0-050 gr de hielo seco se coloca en un recipiente vacío cuyo volumen es de 4.6 lt que está a 50°C. Calcule la presión en atm dentro del recipiente y la variación de la presión cuando la temperatura ha cambiado a 60°C
Respuestas
Respuesta dada por:
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V P = n x R x T
m = 0.050 g
Mm CO2 = 44 g/mol
V = 4.6 L
R = 0.0821 (L atm/mol K)
T = ºC + 273 = K
T = 50 + 273 = 323 K
mol= masa/Mm
mol = 0.050 g/ 44 g/mol
mol = 0.00114
CALCULAR LA PRESION CUANDO SE CONVIERTE EN GAS:
P = 0.00114 mol x 0.0821 (l atm/mol K) x 323 K
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4.6 L
P = 0.00657 atm
B) aumento de la temperatura a 60 ºC
T = 60 + 273 = 333 K
P = 0.00114 mol x 0.0821 (atm L/mol K) x 333 K
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4.6 L
P = 0.00677 atm
m = 0.050 g
Mm CO2 = 44 g/mol
V = 4.6 L
R = 0.0821 (L atm/mol K)
T = ºC + 273 = K
T = 50 + 273 = 323 K
mol= masa/Mm
mol = 0.050 g/ 44 g/mol
mol = 0.00114
CALCULAR LA PRESION CUANDO SE CONVIERTE EN GAS:
P = 0.00114 mol x 0.0821 (l atm/mol K) x 323 K
````````````````````````````````````````````````````````````
4.6 L
P = 0.00657 atm
B) aumento de la temperatura a 60 ºC
T = 60 + 273 = 333 K
P = 0.00114 mol x 0.0821 (atm L/mol K) x 333 K
````````````````````````````````````````````````````````````````
4.6 L
P = 0.00677 atm
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