The reverse reaction (HCOOH → CO + H2O) is fairly easily done, as mentioned in this Wikipedia article: Formic acid, so the forward reaction should be feasible too—but it might well not be practical. An amphoteric solution is a substance that can chemically react as either acid or base. 21 Samples of three oxides, X, Y and Z, were added separately to dilute hydrochloric acid and to dilute sodium hydroxide. On the left side of this reaction, the mineral calcite (CaCO 3) is in contact with hydrochloric acid (HCl). X and Y react with dilute hydrochloric acid but Z does not react. Therefore, we can imagine the reverse reaction theoretically, which would make carbon monoxide an acidic oxide. Which type of oxide are each of X, Y and Z? Carbon dioxide does react with water to a slight extent to produce hydrogen ions (strictly, hydroxonium ions) and hydrogencarbonate ions. ⑤ Do not use Na ₂ CO ₃ (soda) and NaHCO ₃ instead of CaCO ₃ (baking soda) to react with hydrochloric acid to make carbon dioxide. In general: acid + carbonate → salt + water + carbon dioxide. However, the forward reaction does not proceed easily and it needs both the high acidity of sulphuric acid and its strong dehydrative properties to actually work. Based on their acid-base characteristics oxides are classified as acidic, basic, amphoteric or neutral: An oxide that combines with water to give an acid is termed as an acidic oxide. These react to form carbon dioxide gas (CO 2), water (H 2 O), dissolved calcium (Ca ++), and dissolved chlorine (Cl--). type of oxide acidic amphoteric basic A X Y Z A salt, water and carbon dioxide are produced when acids react with carbonates. The carbon dioxide bubbles that you observe are evidence that the reaction is taking place. The oxide that gives a base in water is known as a basic oxide. ④ is marble (CaCO in the laboratory ₃ reaction) dilute hydrochloric acid and carbon dioxide from the system. Overall, this reaction is: The solution of carbon dioxide in water is sometimes known as carbonic acid, but in fact only about 0.1% of the carbon … Y and Z react with aqueous sodium hydroxide but X does not react.