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mass
amount
molar mass
concentration
solution volume
gas volume
molar gas volume
Avogadro
constant, L
number of
entities, N
P2. PRECIPITATION & SOLUBILITY
P2.3 Predicting the Result of Mixing Pairs of Aqueous Salt Solutions
When solutions of two soluble salts are mixed, two new combinations of ions are possible.
If either of these new combinations produces an insoluble salt, then a precipitate will form.
The change occurring is best represented using an ionic equation and this is generally the case with precipitation reactions.
Particularly as they are fairly unreactive chemically in aqueous solution, Group 1 metal ions and nitrate ions will often play the role of spectator ions in precipitation processes. These are ions present in solution at the beginning and also at end of the reaction, i.e., those that have undergone no net chemical change.
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