volume_mute
Will a double-replacement reaction occur?
publish date: 2024/01/09 15:44:6.302166 UTC
volume_muteNaOH + FeCl2 → ?
Correct Answer
Yes
Explanation
According to the solubility rules, both NaOH and FeCl2 are expected to be soluble. If we assume that a double-replacement reaction may occur, we need to consider the possible products, which would be NaCl and Fe(OH)2. NaCl is soluble, but, according to the solubility rules, Fe(OH)2 is not. Therefore, a reaction would occur, and Fe(OH)2(s) would precipitate out of solution. The balanced chemical equation is.
2NaOH(aq) + FeCl2(aq) → 2NaCl(aq) + Fe(OH)2(s)
| These compounds generally dissolve in water (are soluble): | Exceptions: |
|---|---|
| All compounds of Li+, Na+, K+, Rb+, Cs+, and NH4+ | None |
| All compounds of NO3- and C2H3O2- | None |
| Compounds of Cl-, Br-, I- | Ag+, Hg22+, Pb2+ |
| Compounds of SO42 | Hg22+, Pb2+, Sr2+, Ba2+ |
| These compounds generally do not dissolve in water (are insoluble): | Exceptions: |
|---|---|
| Compounds of CO32- and PO43- | Compounds of Li+, Na+, K+, Rb+, Cs+, and NH4+ |
| Compounds of OH- | Compounds of Li+, Na+, K+, Rb+, Cs+, NH4+, Sr2+, and Ba2+ |
Reference
Beginning Chemistry v. 1.0