domingo, 17 de abril de 2011

Molaridad


1.- Cloruro de Sodio        Na 22.98 x 1= 22.98         Cl 35.45 x 1= 35.45      58.43 Moles 
                                                                                                                                              

58.43--------------------- 100                   22.48----------------------- x %

(22.48)(100)
(58.43)

22.48
X100
2248.00
 58.43/2248= 39.32

58.43------------------- 100
35.45--------------------- x %
(35.45)(100)
(58.43)
35.45
X100
3545.00
58.43/3545= 60.67
86.91--------------------100
54.93-------------------- x%
(54.93)(100)
(86.91)
54.93
X100
5493.00

86.91/5493 = 63.20
86.91--------------------100
31.48-------------------- x%
(31.98)(100)
(86.91)
31.98
X100
3198.00

86.91/3198 = 3198


3.-Nitrato de Plata       AgNO3
Ag 107.86 x 1= 107.86                                                                                                                                                           N 14.00 x 1= 14.00                                                                                                                                                                      O 15.99 x 3 = 47.97
169.83-----------------100
107.86----------------x%
(107.86)(100)
     (169.83)
107.86
X100
10786.00
169.83/10786= 63.51
169.83---------------100
14.00------------------x%
(14.00)(100)
 (169.83)
14.00
X100
1400

169.83/1400= 8.24
169.83----------------100

47.97-------------------x%
(47.97)(100)
(169.83)
47.97
X100
4797.00

169.83/4797= 28.24

4.- Hidróxido de Potasio   KOH
K 39.10 x1= 39.10                                                                                                                                                                                     O 15.99 x 1= 15.99    = 56.09 Moles                                                                                                                                                                                  H 1.00 x 1= 1.00    
56.09-------------100
39.10-------------x%
(39.10)(100)
(56.09)
39.10
X100
3910

56.09/3910= 69.70
56.09-------------100
15.99--------------x%
(15.99)(100)
(56.09)
15.99
X100
1599

56.99/1599= 28.50
56.09-------------100
1.00----------------x%
(1.00)(100)
(56.09)
1.00
X100
100

56.99/100= 1.78
     

5.-Azucar        C12 H22 O11   
C 12.01 x 12= 144.12                                                                                                                                                        H 1.00 x 22= 22                                                                                                                                          O 15.99 x 11= 175.89                                                                                                                                                                                                    342.01 Moles
342.01-------------100
144.12-------------x%
(144.12)(100)
(342.01)
144.12
X100
14412.00

342.01/14412= 42.13
342.01------------100
22-----------------x%
(22)(100)
(342.01)
22
X100
2200

342.01/2200= 6.43
342.01-----------100
175.89------------x%
(175.89)(100)
(342.01)
175.89
X100
17589.00

342.01/17589=51.42
 

6.- Metanol CH4O
C 12.01 X 1= 12.01                                                                                                                                                                                                                                                   H 1.00 X 4 = 4                                                                                                                                                                                               O 15.99 X 1= 15.99                                                                                                                                                                          32 Moles
32--------------------100
12.01--------------x%
(12.01)(100)
(32)
12.01
X100
1201

32/1201= 37.53
32------------------100
4---------------------x%
(4)(100)
(32)
4
X100
400

32/400= 12.5
32-----------------100
15.99-------------x%
(15.99)(100)
(32)
15.99
X100
1599

32/1599= 46.96

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