Which compound is insoluble in water? There are certain rules that we need to take note of before mentioning compounds that are insoluble in water.
Yes, solubility rule gives us a uide on how to determine compound that re solunle in water or
I will recap the most common solubility rules and I will mention specific compounds that are insoluble in water.
1. All nitrates are soluble
2. All sulphates are soluble except sulphates of Barium , Strontium, and lead
3.All chlorides, Bromides, Iodides are soluble except that of silver, mercury and lead
4.All fluorides are soluble except Fluorides of Magnesium, Calcium, Strontium, Barium and Lead
5.All chlorates, Perchlorates and acetates are soluble
6. All hydroxides are insoluble except hydroxides of Potassium, Sodium and Ammonium.
Which compound is insoluble in water?
I will like to discuss with examples the salts that are not soluble in water based on the solubility rule.
1. Insoluble Sulphates in water
The compounds that are insoluble in water are sulphates of Barium, Strontium and Lead
Example Barium sulphate(Bariou tetraoxosulphate Vi) BaSO4, Strontium sulphate (Strontium tetraoxosulphate Vi) SrSO4, Lead II teraoxosulphate VI (PbSO4).
Calcium sulphate is partially insoluble and partially soluble in water.
The amount insoluble in water is enough to fully classify it as insoluble compound.
Recall that solubility is the amount of a substance in mole or grams that will dissolve in I dm3 of a solvent.
2. Insoluble chlorides in water
There are insoluble chlorides in water thus; silver chloride (AgCl), Mercury II chloride (HgCl2) and lead II chloride (PbCl2).
3. Insoluble iodides in water
There are insoluble iodides in water thus silver iodide (AgI), mercury II iodide(HgI2) and Lead II iodide (PbI2).
4. Insoluble Bromides in water
There are insoluble iodides in water thus silver bromide (AgBr), mercury II bromide(HgBr2) and Lead II bromide (PbBr2).
5. Insoluble fluorides in water
There are fluorides that are insoluble in water thus; magnesium fluoride (MgF2), Calcium Fluoride (CaF2), Strontium bromide (SrBr2), Barium Bromide (BaBr2) and lead II bromide (PbBr2).
6. Insoluble hydroxides in water
These are insoluble hydroxides in water thus; Potassium hydroxide (KOH), sodium hydroxide (KOH0 and ammonium hydroxide (NH4OH).
7. All carbonates are insoluble except carbonates of sodium, potassium and ammonium
Examples of Insoluble carbonates;
Calcium carbonate (CaCO3), Magnesium carbonate (MgCO3), Aluminium carbonate (Al2(CO3)2), Strontium carbonate (SrCO3), Barium carbonate (BaCO3), iron II carbonate (FeCO3) etc
Which compounds are soluble in water?
1. All nitrates are soluble in water example include potassium nitrate (KNO3), sodium nitrate (NaNO3), Calcium nitrate (Ca(NO3)2), magnesium nitrate (Mg(NO3) Aluminum nitrate (Al(NO3)2 etc
2. Carbonates of sodium, Potassium and Ammonium are soluble
Sodium carbonate (Na2CO3),Potassium carbonate (K2CO3) and Ammonium carbonate (NH4)2CO3 are soluble in water.
3. Hydroxides of Sodium, Potassium and Ammonium are soluble in water
Hydroxides of Sodium, Potassium and Ammonium are soluble in water thus sodium hydroxide(NaOH), Potassium hydroxide (KOH) and ammonium hydroxide (NH4OH)
4. All chlorates, Perchlorates and acetates are soluble in water
Examples include Sodium Chlorate (NaClO3), Potassium chlorate (KClO3), Sodium acetate (CH3COONa) , sodium perchlorate NAclO4 etc
5. All sulphates are soluble except sulphates of Barium , Strontium, and lead
This implies that other sulpahres of metals are soluble in water example Na2SO4, Poatssium sulphate (K2SO4), Sodium sulphate (K2SO4) etc
6. All fluorides are soluble except Fluorides of Magnesium, Calcium, Strontium, Barium and Lead.
Examples of soluble fluorides are NaF, KF, AlF3, etc
Summary of the soluble and insoluble compounds
|Nitrates||All soluble Ecamples are NaNO3, KNO3||Nil|
|Sulphates||All sulphates are soluble except that of Barium, strontium and lead||SrSO4, BasO4, PbSO4|
|Carbonates||Na2CO3, K2CO3, (NH4)2CO3||All carbonates are insoluble except that of potassium, sodium and ammonium|
|Flourides||All fluorides are soluble except Fluorides of Magnesium, Calcium, Strontium, Barium and Lead||MgF2, CaF2, SrF3,BaF3, PbF2|
|Chlorides||All chlorides, Bromides, Iodides are soluble except that of silver, mercury and lead||AgCl, HgCl2, PbCl2|
|Clorates, Prchlorates and Acetates||All chlorates, Perchlorates and acetates are soluble||Nil|
|Hydroxides||NaOH, KOH, NH4OH||All hydroxides are insoluble except that of potassium, sodium and ammonium|
So, with these guidelines stated and explained the question ‘which compound is insoluble in water ‘ has been well answered.