Experiment 3. Separation of the Components of a Mixture

  A.Determination of Mass Percent of Ammonium Chloride ● 

Mass of evaporating dish and original sample  _________

Mass of evaporating dish     _________

Mass of evaporating dish after subliming NH4Cl  ________

Mass of NH4Cl   _______

Percent of NH4Cl (show calculations)

 Use these data 

  A.Determination of Mass Percent of Ammonium Chloride ● 

Mass of evaporating dish and original sample  15.1650 g

Mass of evaporating dish     12.5230 g

Mass of evaporating dish after subliming NH4Cl  14.6589g

Mass of NH4Cl   _______

Percent of NH4Cl (show calculations)

  

. Determination of Mass Percent of Sodium Chloride

● 

Mass of evaporating dish, watch glass and NaCl _____

Mass of evaporating dish and watch glass _____ 

Mass of NaCl  _____

Percent of NaCl (show calculations) _____

 Use these data 

  

Determination of Mass Percent of Sodium Chloride

● 

Mass of evaporating dish, watch glass and NaCl 17.4967 g

Mass of evaporating dish and watch glass 16.7686 g

Mass of NaCl  _____

Percent of NaCl (show calculations) 

  

. Determination of Mass Percent of Silicon Dioxide

Mass of evaporating dish and SiO2  _____

Mass of evaporating dish    _____

Mass of SiO2  _____

Mass percent of SiO2 (show calculations) _____

  

. Determination of Mass Percent of Silicon Dioxide

Mass of evaporating dish and SiO2  13.8354 g

Mass of evaporating dish    12.5230 g

Mass of SiO2  _____

Mass percent of SiO2 (show calculations) _____

  

. Determination of Percent Recovery

Mass of original sample _____

Mass of determined (NH4Cl + NaCl + SiO2)   _____

Difference in these weights _____

Percent recovery = g matter recovered/g original sample x 100%

_____

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