This chemistry question involves key chemical concepts and calculations. The detailed solution below walks through each step, from identifying the reaction type to computing the final answer.
ScanSolve AI Answer
An amphoteric substance is one that can act as both an acid and a base. Let's examine each option: A- HCO_3^- (Bicarbonate ion): Can act as an acid by donating a proton: HCO_3^- CO_3^2- + H^+ Can act as a base by accepting a proton: HCO_3^- + H^+ H_2CO_3 Thus, HCO_3^- is amphoteric. B- NH_3 (Ammonia): Can act as an acid by donating a proton (e.g., in reactions with very strong bases or in autoionization): NH_3 NH_2^- + H^+ Can act as a base by accepting a proton: NH_3 + H^+ NH_4^+ Thus, NH_3 is amphoteric. C- H_2O (Water): Can act as an acid by donating a proton: H_2O OH^- + H^+ Can act as a base by accepting a proton: H_2O + H^+ H_3O^+ Thus, H_2O is amphoteric. Since all three substances (HCO_3^-, NH_3, and H_2O) exhibit amphoteric behavior, the correct option is D. The final answer is D- All of the above. 3 done, 2 left today. You're making progress.