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☆Write the products obtained when Na So, is hydrolysed. i.e., reacts with water ?☆Write the formula of the acid and the base from which the salt Na, Co³ is obtained.Help me answering this correctly |
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Answer» Answer: Carbonic acid and carbonate SALTS Carbonic acid (H2CO3) is formed in small amounts when its anhydride, carbon dioxide (CO2), dissolves in water. CO2 + H2O ⇌ H2CO3 The predominant species are simply loosely HYDRATED CO2 molecules. Carbonic acid can be considered to be a diprotic acid from which two series of salts can be formed—namely, HYDROGEN carbonates, containing HCO3−, and carbonates, containing CO32−. H2CO3 + H2O ⇌ H3O+ + HCO3− HCO3− + H2O ⇌ H3O+ + CO32− However, the acid-base behaviour of carbonic acid DEPENDS on the different rates of some of the reactions involved, as well as their dependence on the pH of the system. For example, at a pH of less than 8, the principal reactions and their relative speed are as follows: CO2 + H2O ⇌ H2CO3 (slow) H2CO3 + OH− ⇌ HCO3− + H2O (fast) Above pH 10 the following reactions are important: CO2 + OH− ⇌ HCO3− (slow) HCO3− + OH− ⇌ CO32− + H2O (fast) Between pH values of 8 and 10, all the above equilibrium reactions are significant. |
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