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domingo, 21 de agosto de 2011



Cálculos
*       KH2PO4  0.2M     
100ml
M= g soluto
          PM
K 1X 39=39
H2X1=2
P1X31=31
O4X16=64
            136g/mol
G soluto=(136g/mol)(0.2mol/L)(0.1L)=2.72g
*       NaOH 0.2M
Na1x23=23
O1X16=16
H1X1=1
            40 g/mol
G soluto(40g/mol)(0.2mol/L)(0.1L)=0.8g

*       C6H5O0.05M
C6X12=72
07X16=112
H8X1=8
           192g/mol
G soluto=(192g/mol)(0.05mol/L)(0.1L)=0.96g

*       Na3c6H5O0.05M
Na3X23=69
C6X12=72
H5X1=5
O7X16=112
             258g/mol
g soluto(258g/mol)(0.1L)(0.05mol/L)=1.29 g

*       HCl 0.2M
Cl1X36=36
H1X1=
           37g/mol
G soluto(37g/mol)(0.2mol/L)(0.1L)=074 g
  
*       Na2HPO4 0.2M
Na2X23=46
H1X1=1
P1X31=31
04X16=64
              142g/mol
G soluto=(0.2mol/L)(142g/mol)(0.1L)=2.84g





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