dada la siguiente ecuacion estequiometrica Ca H2 + 2H2O----> Ca (OH)2+ 2H2 establezca en cada caso cual es el ractante limite : A) 10 gramos de Ca H2 y 50 gramos de H 2O B)0.1 gramos de Ca H2 y 0.5 gramos de H2O C) 500 gramos de Ca H2 200 gramos de H2O ¡¡¡POR FAVOR ALGUIEN ME AYUDA ??
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CaH2 + 2H2O ----> Ca(OH)2 + H2
a)
Mm CaH2 = 42 g/mol
H2O = 18 g/mol
1. calcular mol a partie de los gramos:
mol CaH2 = 10 g CaH2 x 1 mol CaH2
```````````````````
42 g CaH2
mol = 0.2381 de CaH2
mol H2O = 50 g H2O x 1 mol H2O
````````````````
18 g H2O
mol = 2.7778 H2O
2. calcular mol a partie de la ecuación
mol Ca(OH)2 = 0.2381 mol CaH2 x 1 mol Ca(OH)2
``````````````````````
1 mol CaH2
mol Ca(OH)2 = 0.2381
mol Ca(OH)2 = 2.7778 mol H2O x 1 mol Ca(OH)2
````````````````````````
2 mol H2O
mol = 1.3889 Ca(OH)2
REACTIVO LIMITANTE: CaH2 (produce 0.2381 mol de Ca(OH)2)
2.
b)
Mm CaH2 = 42 g/mol
H2O = 18 g/mol
1. calcular mol a partir de los gramos:
mol CaH2 = 0.1 g CaH2 x 1 mol CaH2
```````````````````
42 g CaH2
mol = 0.002381 de CaH2
mol H2O = 0.5 g H2O x 1 mol H2O
````````````````
18 g H2O
mol = 0.02778 H2O
2. calcular mol a partie de la ecuación
mol Ca(OH)2 = 0.002381 mol CaH2 x 1 mol Ca(OH)2
``````````````````````
1 mol CaH2
mol Ca(OH)2 = 0.002381
mol Ca(OH)2 = 0.02778 mol H2O x 1 mol Ca(OH)2
````````````````````````
2 mol H2O
mol = 0.01389 de Ca(OH)2
REACTIVO LIMITANTE: CaH2 (produce 0.002381 mol de Ca(OH)2
3.
c)
Mm CaH2 = 42 g/mol
H2O = 18 g/mol
1. calcular mol a partir de los gramos:
mol CaH2 = 500 g CaH2 x 1 mol CaH2
```````````````````
42 g CaH2
mol = 11.905 de CaH2
mol H2O = 200 g H2O x 1 mol H2O
````````````````
18 g H2O
mol = 11.111 H2O
2. calcular mol a partie de la ecuación
mol Ca(OH)2 = 11.904 mol CaH2 x 1 mol Ca(OH)2
``````````````````````
1 mol CaH2
mol Ca(OH)2 = 11.904
mol Ca(OH)2 = 11.111 mol H2O x 1 mol Ca(OH)2
````````````````````````
2 mol H2O
mol = 5.5556 de Ca(OH)2
REACTIVO LIMITANTE: H2O (produce 5.5556 mol Ca(OH)2
a)
Mm CaH2 = 42 g/mol
H2O = 18 g/mol
1. calcular mol a partie de los gramos:
mol CaH2 = 10 g CaH2 x 1 mol CaH2
```````````````````
42 g CaH2
mol = 0.2381 de CaH2
mol H2O = 50 g H2O x 1 mol H2O
````````````````
18 g H2O
mol = 2.7778 H2O
2. calcular mol a partie de la ecuación
mol Ca(OH)2 = 0.2381 mol CaH2 x 1 mol Ca(OH)2
``````````````````````
1 mol CaH2
mol Ca(OH)2 = 0.2381
mol Ca(OH)2 = 2.7778 mol H2O x 1 mol Ca(OH)2
````````````````````````
2 mol H2O
mol = 1.3889 Ca(OH)2
REACTIVO LIMITANTE: CaH2 (produce 0.2381 mol de Ca(OH)2)
2.
b)
Mm CaH2 = 42 g/mol
H2O = 18 g/mol
1. calcular mol a partir de los gramos:
mol CaH2 = 0.1 g CaH2 x 1 mol CaH2
```````````````````
42 g CaH2
mol = 0.002381 de CaH2
mol H2O = 0.5 g H2O x 1 mol H2O
````````````````
18 g H2O
mol = 0.02778 H2O
2. calcular mol a partie de la ecuación
mol Ca(OH)2 = 0.002381 mol CaH2 x 1 mol Ca(OH)2
``````````````````````
1 mol CaH2
mol Ca(OH)2 = 0.002381
mol Ca(OH)2 = 0.02778 mol H2O x 1 mol Ca(OH)2
````````````````````````
2 mol H2O
mol = 0.01389 de Ca(OH)2
REACTIVO LIMITANTE: CaH2 (produce 0.002381 mol de Ca(OH)2
3.
c)
Mm CaH2 = 42 g/mol
H2O = 18 g/mol
1. calcular mol a partir de los gramos:
mol CaH2 = 500 g CaH2 x 1 mol CaH2
```````````````````
42 g CaH2
mol = 11.905 de CaH2
mol H2O = 200 g H2O x 1 mol H2O
````````````````
18 g H2O
mol = 11.111 H2O
2. calcular mol a partie de la ecuación
mol Ca(OH)2 = 11.904 mol CaH2 x 1 mol Ca(OH)2
``````````````````````
1 mol CaH2
mol Ca(OH)2 = 11.904
mol Ca(OH)2 = 11.111 mol H2O x 1 mol Ca(OH)2
````````````````````````
2 mol H2O
mol = 5.5556 de Ca(OH)2
REACTIVO LIMITANTE: H2O (produce 5.5556 mol Ca(OH)2
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