Its all to do with enthlapy and entropy.
Anything which is soluble usually has a negative standard enthlapy of solution - the energy involved when 1 mole of solute dissolves in a solvent to give an infinately dilute solution. However, NaCl has a slightly positive enthalpy of solution, yet it dissolves.
The reason for this is entropy - the change in the amount of disorder. When NaCl dissolves in solution, there is more chaos, more molecules within the solution. Any process that has a large positive entropy change will be favourable - spontaneous and can occur (reaction will 'go').
However, with CaO, the Ca2+ formed in solution has a high affinity (attraction to) for water molecules, hence a lot of water molecules are arranged orderly - less chaos and hence a negative entropy. This should in effect make the compound insoluble, however, the slight solubility is due to it still having a negative enthalpy change of solution - hence despite entropy it is still slightly soluble.
(You may be asking how is dissolving CaO possible if entropy is negative? The entropy of the system maybe negative, but the entropy of the surroundings is positive (dissolving gives out heat - exothermic), hence the overall entropy (sum of both entropies) is positive and the reaction will 'go'.
Yes it is soluble in cold water only.
This compound precipitates in water. Follow the rules for the solubility of salts in water--rule 6 states that carbonates are only slightly soluble. Cr2(CO3)3(s)
Calcium carbonate is largely insoluble in water but is quite soluble in water containing dissolved carbon dioxide, combining with it to form the bicarbonate Ca(HCO 3 ) 2 .
silver chloride is soluble in ammonia, lead chloride is only slightly soluble in ammonia
Yes, ethanol belongs to the alcohol functional group therefore polar, and BaCl2 is polar, so it does dissolve.
Sodium chloride is soluble only in the water solution of HCl.
only very slightly soluble in water. water formulations of epinephrine employ slightly acidic conditions to allow epinephrine to form water soluble salts.
yes. When it is set for a long time in the sun, in a couple months (or year) the water will evaporate and it will leave behind beautiful salt crystals. That's science at work.
Silver bromide is only very slightly soluble in water.
Clindamycin HCl is very water soluble, while only slightly soluble in alcohol.
Diphenylamine is only slightly soluble in water, but more soluble in polar organic solvents.
Yes, many ionic compound are water soluble, such as sodium chloride. Others, such as calcium carbonate are not water soluble- or only very slightly soluble.
Codeine is soluble in ethanol. Codeine Phosphate, however, is soluble in water and only slightly soluble in alcohol.
Ethanol is two-thirds alkyl chain and one-third water itself, so it is close enough to be completely soluble at any ratio with water. However, phenol is only around one-seventh "water" with the rest of it trapped in a carbon ring. This prevents water being able to bond at all with most of the molecule, and is thus only slightly soluble.
Oxygen is only very slightly soluble in water. Water in contact with air has about 8 mg of O2/L dissolved in it. So I would not agree that oxygen is particularly soluble in water at all.
Water soluble. Opiates are very water soluble unless they are in their freebase form but hydrocodone is not in its freebase form so it is water soluble. Acetaminophen (tylenol), ibuprofen, an aspirin are only very slightly water soluble and at cold temperatures they are practically not soluble at all. Hope this answers your question.
The substance that can be dissolved is called solubleThe substance that cannot be dissolved is called insoluble