Use the following information to answer the nent question. 1. A solution of nickel(11) sulfite is combined with a solution of sodium hydroxide. 2. A piece of solid silver is placed in an acidified solution of potassium sulfate. 3. A solution of nickel(II) nitrate is combined with an iron(II) chloride solution. 4. A solution of sodium hypochlorite is mixed with a chromium(Ii) iodide solution. 5. Chlorine gas is bubbled through a tin(II) nitrate solution. 6. A piece of solid cadmium is placed in a beaker of lead(II) nitrate solution. 7. A piece of gold placed is placed in a beaker containing a sulfuric acid solution. 8. A solution of potassium nitrate has hydrogen gas bubbled through it. he above combinations that would produce a spontaneous reaction are