when HCl(aq) is added in a saturated sodium chloride solution, there is a formation of precipitate. why?? chemical equation??
2006-09-09 15:38:07 · 3 answers · asked by cyril_2588 2 in Science & Mathematics ➔ Chemistry
It is due to the "common ion effect".
Both Sodium Chloride (NaCl) and Hydrochloric acid (HCl) contain the Chloride ion (Cl-).
When additional Chloride ions are added to an already saturated solution of Sodium Chloride, the excess of Cl- pushed some of the NaCl out of solution.
Only so much of a given ion can be in solution at a time, if the solution is already saturated, any further addition of that ion will cause the solute to precipitate out and re-establish equilibrium at the saturation point.
2006-09-09 15:43:13 · answer #1 · answered by mrjeffy321 7 · 1⤊ 0⤋
The precipitate is probably sodium chloride. This precipitates due to what is called the common ion effect. HCl when added to a saturated solution of sodium chloride, introduces excess chloride ion resulting in precipitation of the sodium ion. If the water is contaminated with other metal ions such as magnesium or calcium, these will likely precipitate as well.
2006-09-09 15:44:59 · answer #2 · answered by richard Alvarado 4 · 0⤊ 0⤋
Is the sodium chloride dissolved in water? -
Nevermind - you are getting good answers.
2006-09-09 15:44:42 · answer #3 · answered by Melis__A 3 · 0⤊ 0⤋