Find the concentration of Ca2+, in equilibrium with CaSO4(s) and 0.035 M SO4-2. A solution contains 0.0330 M Pb2+and 0.0210 M Ag+. Can 99% of Pb2+be precipitated by chromate(CrO42-), without precipitating Ag+? What will the concentration of Pb2+be, when Ag2CrO4begins to precipitate?

If a solution containing 0.015 M each of bromide, chloride, iodide, and thiocyanate, is treated with Cu+, in what order will the anions precipitate?

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.