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

       C₆H₅O₇  0.05M

C6X12=72

07X16=112

H8X1=8

           192g/mol

G soluto=(192g/mol)(0.05mol/L)(0.1L)=0.96g

       Na₃c₆H₅O₇  0.05M

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=1 

           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