How do I know that #"NaHCO"_3(aq)# is soluble in water?

1 Answer
Truong-Son N.
Oct 10, 2017

Well, given that:

  • sodium compounds are generally soluble in water.
  • #(aq)# means aqueous, i.e. was dissolved in water.

It means that the compound, the solute, must be soluble in water. Those tend to be ionic RATHER THAN molecular. The intermolecular force strength of the hydrogen-bonding in water is similar to the ion-ion interactions in #NaHCO_3(s)#.

Or, you could say that sodium metal forms a cation and bicarbonate anion is an ion. Therefore, ion + ion = ionic compound.

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