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galben [10]
3 years ago
15

El monoxido de carbono reacciona con el hidrogeno gaseoso para producir metanol (ch3oh) calcule el reactivo limite y el reactivo

en exceso si la reaccion inicia con 2,0 g de cada reactivo calcule cuantos gramos de metanol se obtiene
Physics
1 answer:
Orlov [11]3 years ago
6 0

Answer:

Se obtienen 2,27 gramos de metanol.

Explanation:

La reacción entre monóxido de carbono e hidrógeno para producir metanol es la siguiente:

CO + 2H₂ → CH₃OH  

Para encontrar el reactivo limitante y el reactivo en exceso, debemos calcular el número de moles de CO y H₂:

\eta_{CO} = \frac{m}{M}              

En donde:    

m: es la masa

M: es el peso molecular  

\eta_{CO} = \frac{m}{M_{CO}} = \frac{2,0 g}{28,01 g/mol} = 0,071 moles

\eta_{H_{2}} = \frac{2,0 g}{2,02 g/mol} = 0,99 moles

Dado que la relación estequiométrica entre CO y H₂ es 1:2, el número de moles de hidrógeno gaseoso que reaccionan con el monóxido de carbono es:

\eta_{H_{2}} = \frac{2}{1}*0,071 = 0,142 moles      

Entonces, se necesitan 0,142 moles de H₂ para reaccionar con 0,071 moles de CO y debido a que se tienen más moles de H₂ (0,99 moles) entonces el reactivo limitante es CO y el reactivo en exceso es H₂.

Ahora podemos encontar la masa de metanol obtenida usando el reactivo limitante (CO) y sabiendo que la realcion estequiométrica entre CO y CH₃OH es 1:1.    

\eta_{CH_{3}OH} = \eta_{CO} = 0,071 moles

m = 0,071 moles*32,04 g/mol = 2,27 g

Por lo tanto, se obtienen 2,27 gramos de metanol.

Espero que te sea de utilidad!      

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