action of a double-replacement reaction 2. Using the solubility rules, predict the solubility of each of the following compounds in wan solution), s = insoluble solid) the following compounds in water (aq-soluble (aqueous a) CaCO3 b ) Al(OH), S c ) Cu(NO3)290_ d) HgCl2 99 - double displacement reaction takes place between two ionic compounds that are dissolved in an aqueous solution and form two new compounds. For example, sodium phosphate and silver nitrate combine to yield sodium nitrate and silver phosphate. a) Write the molecular equation for this reaction b) Write the total ionic equation for this reaction c) Write the net ionic equation for this reaction 4. a) An aqueous solution of sodium hydroxide is labeled 0.010 M NaOH. What is the molar concentration of NaOH, Na', and OH in the aqueous solution? Explain. b) An aqueous solution of calcium chloride is labeled 0.010 M CaCl2. What is the molar concentration of CaCl, and Cl in the aqueous solution? Explain. acement reactions: