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College Chemistry

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In this lab: we demonstrated the method of evaporation of a saturated sodium chloride solution.

The following question ask:

1) why is sodium chloride chosen for the solute?

2)Suggest reasons why the following were not chosen for the solute?
a)Calcium carbonate (CaCO3)=
b)Sodium Cyanide (NaCN)=
c)Gold Chloride (AuCl3)=
d)Hydrogen Chloride (HCl)=

  • College Chemistry -

    a) is not very soluble in water
    b) is poisonous
    c) is too expensive
    d) is volatile, dangerous to breathe, and does not leave a solid residue

  • College Chemistry -

    I might use NaCl because it is cheap table salt and does not have the drawbacks of all the others suggested.

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