Question

Another form of this equation (called the complete ionic equation) indicates the species that are actually present in solution. 2Na+ + CO32-+2hr + 2 cr . 4 co2 +H2O + 2 Na. + 2 cr Since balanced chemical equations indicate only substances that change, this equation simplifies to This simplified equation is called a net ionic equation. The evolution of CO2 gas is visible as tiny bubbles. Sulfate, so2 Sulfate, So,, is found in compounds such as NaSO4. If a solution containing Ba ions from a compound such as BaCl2 is added to a solution containing SO4 ions, an insoluble solid called a precipitate forms. This may be represented by the equation Chloride, CT Chloride, CT, is found in compounds such as NaCI. If a solution containing Ag from a soluble compound such as AgNO, is added to a solution containing CI, a precipitate of silver chloride forms. Ag+ + Cl-? AgCl(s) This precipitate will dissolve when ammonia, NHs, is added to it. The AgCl reacts with the NH3 to form another ion, AgNHsh. AgCI(s) + 2 NH- Ag(NHs)2+CI Ag(NHb)h' is called a complex ion. Complex ions are composed of a metal ion and one or more molecules or negative ions. lodide, I lodide, I, from a soluble compound, such as KI, also forms a precipitate when it is mixed with a solution containing Ag' ion Ag+ +?? AgI(s) Silver iodide, unlike silver chloride, is not soluble in ammonia, NH,

Answer 1