source : yahoo.com
Which of these compounds are soluble in water?
Remember some BASIC rules of solubility: (SIW=soluble in water)
(i) ALL sodium, potassium, ammonium, ethanoate and nitrate-containing salts are SIW
(ii) ALL chloride-containing salts are SIW except: mercury(I) chloride, silver chloride and lead(II) chloride.
(iii) ALL sulphate salts are SIW except: barium sulphate, calcium sulphate and lead(II) sulphate.
(iv) ALL lead salts are INSOLUBLE in water except: lead(II) nitrate and lead(II) ethanoate.
(v) ALL carbonates are INSOLUBLE except: sodium, potassium and ammonium carbonates.
(vi) Mineral acids are usually very soluble in water.
More information please refer to solubility rules here: http://www.csudh.edu/oliver/chemdata/solrules.htm
(NOTE: The solubility of a mineral salt depends on its enthalpy of hydration and lattice energy.)
Soluble salts/acid:NaCl, KCl, AgNO3, H2SO4
Insoluble salts: Al(OH)3, Ca(OH)2 (slightly soluble so i assume it insoluble), AgCl, BaSO4
Predict whether the following compounds are soluble or – Ca(OH)2 is slightly soluble. S2- – All sulfides are insoluble except those of the Group 1 and Group 2 elements and NH4+. Given this information, 1. ZnBr2 = soluble because all bromides are soluble. 2. Pb(NO3)2 = soluble because all nitrates are soluble. 3. NH4Br = soluble because NH4 is soluble. 4.If this is the predominant factor, then the compound may be highly soluble in water. Force of Attraction Between Oppositely Charged Ions . This force tends to keep the ions in the solid state. When it is a major factor, then water solubility may be very low.Remember some BASIC rules of solubility: (SIW=soluble in water) (i) ALL sodium, potassium, ammonium, ethanoate and nitrate-containing salts are SIW (ii) ALL chloride-containing salts are SIW except: mercury(I) chloride, silver chloride and lead(II) chloride.
Solubility Rules of Ionic Solids in Water – The solubility of ionic compounds in water depends on the type of ions (cation and anion) that form the compounds. For example, AgNO 3 is water-soluble, but AgCl is water-insoluble. The solubility of a salt can be predicted by following a set of empirical rules (listed below), developed based on the observations on many ionic compounds.Because water is the biological solvent, most biological organic molecules, in order to maintain water-solubility, contain one or more charged functional groups. These are most often phosphate, ammonium or carboxylate, all of which are charged when dissolved in an aqueous solution buffered to pH 7.Soluble (most sulfate compounds are soluble. Note that Hg 2 SO 4 (mercury (I) sulfate) is insoluble) e) NH 4 ClO 4 Soluble (both ammonium and perchlorate compounds are soluble) 7) Classify the following compounds as soluble or insoluble in water. a) AgCl Insoluble (most silver compounds are insoluble in water) b) Ba(C 2 H 3 O 2) 2
Which of these compounds are soluble in water? | Yahoo Answers – All nitrates are soluble in water, so Zn (NO 3) 2 is soluble. All bromides are soluble in water, except those combined with Pb 2+, so PbBr 2 is insoluble. All phosphates are insoluble, so Sr 3 (PO 4) 2 is insoluble. Exercise 7.5. 1: SolubilityCharacterize the following compounds as soluble or insoluble in water: (a) Ca 3 (PO 4) 2, (b) Mn(OH) 2, (c) AgClO 3, (d) K 2 S. 20. Characterize the following compounds as soluble or insoluble in water: (a) CaCO 3, (b) ZnSO 4, (c) Hg(NO 3) 2, (d) HgSO 4, (e) NH 4 ClO 4. 21. Write ionic and net ionic equations for the following reactions: (a) (bChemistry – solubility. Arrange the following compounds in order of increasing solubility in water: * O2 * LiCl * Br2 * CH3OH Like dissolves like; that is, polar compounds usually are soluble in water and non-polar compounds are not soluble in water.