Answer to Question #311616 in Chemistry for Linda

Question

The calcium chloride produced in the solvay process can be used in the production of road salt.however it is sometimes discharged as waste into the sea by coastal industrial plants .describe a simple test and its results that can be carried out on a sample of seawater to monitor if calcium chloride has been discharged into the sea.

Answer 1

The principal byproduct of the Solvay process is calcium chloride (CaCl₂) in aqueous solution. The process has other waste and byproducts as well.^[11] Not all of the limestone that is calcined is converted to quicklime and carbon dioxide (in reaction II); the residual calcium carbonate and other components of the limestone become wastes. In addition, the salt brine used by the process is usually purified to remove magnesium and calcium ions, typically to form carbonates; otherwise, these impurities would lead to scale in the various reaction vessels and towers. These carbonates are additional waste products.