Answer to Question #109860 in Inorganic Chemistry for Samantha

Question #109860
What is the balanced equilibrium equation for a saturated solution of sodium hydrogen carbonate? Discuss the effect on this equilibrium of the addition of more water.
1
Expert's answer
2020-04-15T13:58:22-0400

Saturation is an equilibrium property, which we may represent by the following equation:



Normally:


But the term [NaHCO3(s)] is meaningless; you cannot speak of the concentration of a solid; so it is removed from the equation:



So if solid sodium carbonate is present, this equilibrium operates, sodium carbonate is saturated. 

If we add extra water the precipitate would dissolve.



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