WebAs we move down in a group, acidic nature of oxides decreases and basic nature increases. Si,Ge,Sn and Pb belongs to group 14, among them Si is the first element and Pb is last, hence, oxides of Si are acidic and oxides of … WebWater is amphoteric as it can act as an acid or as a base. In the image shown at the right one molecule of H 2 O acts as a base and gains H + to become H 3 O + while the other acts as an acid and loses H + to become OH −. Another example is furnished by substances like aluminium hydroxide, Al(OH) 3.
chem ch. 15-18 exam 2 Flashcards Quizlet
WebIf an amphoteric substance reacts with an acid, then it will take on the role of base. HCO 3− , H 2O , NH 3 can act as both donor and acceptor to H + ions so they are amphoteric in … WebQuestion: 1) Which of the following species is amphoteric? A) CO32- B) HF C) NH4 D) HPO3 E) None of the above is amphoteric 2) Identify the weak diprotic acid. A) CO32- B) HF C) … ifield garage
SiO2 , GeO2 , SnO and PbO are respectively: - Toppr
WebAmmonia (NH 3) is also amphoteric but NH3 cannot act as an acid in aqueous solutions because NH 2– ion is a strong base due to which it is not stable in water. Ammonia can act as amphoteric in certain solvents only such as DMSO and liquid ammonia. Now let’s see how Lewis theory of acids and bases proves ammonia (NH 3) as a weak base. WebSolution for Which of the following species is amphoteric? O co,? O HF O NHA O HPO42 None of the above are amphoteric. WebOct 29, 2024 · Amphoteric species is the species that behave as an acid and the base. Its basicity value (pk b) is 4.75, and it is miscible soluble in water. Three concepts of acid and bases will explain Ammonia’s acidic or basic nature. 1. Arrhenius Concept of Acids and Bases This concept is only valid for the dissociation that occurs in the aqueous medium. ifield fish and chips