Question
22. Soluble salts are formed by reacting metal oxides with acids. (a) Give one other type of substance that can react with an acid to form a soluble s __
Answer
4.3
(240 Votes)
Wyatt
Master · Tutor for 5 years
Answer
22a. Basic metal/Carbonates22b. Sulfuric Acid and Zinc
Explanation
In this question, we are asked two related things about the formation of soluble salts. Firstly, we have to provide one other type of substance (apart from metal oxides) which can react to form soluble salts, and secondly, name the acid and the metal which can be used to produce a specific salt - zinc sulfate.(a) Recall from basic chemistry knowledge that besides a metal oxide, bases (specifically metal base) and carbonates can react with acids to form a soluble salt. The reactions are usually of the form: Acid + Base -> Salt + Water or Acid + Carbonate -> Salt + Water + Carbon Dioxide.(b) To prepare zinc sulfate, an acid has to react with a zinc metal. About the acid, all we need to produce a sulfate salt is a sulfur-based acid, the most common being sulfuric acid.The backbone of chemical reactions to keep in mind here is that the compound that will form during a reaction between a certain acid and a metal is just picking the name of the cation part from the metal and the anion part from the acid. For instance, if we have reactants' name like sulfuric acid (whose conjugate base is sulfate) and zinc metal, we can prediction the resulting salt to be something ending in -sulfate (from sulfuric acid) and begins with zinc- (from the metal zinc). Combining these terms gives Zinc Sulfate.