26 Juin The fresh new hydrogen ion intensity of a shield provider consisting of an excellent weakened acidic and its particular salts is provided from the ………………
Question dos5. Dissociation constant of NHcuatroOH is step 1.8 x 10 -5 the hydrolysis constant of NH4Cl would be ................ (a) 1.8 x 10 -19 (b) 5.55 x 10 -10 (c) 5.55 x 10 -5 (d) 1.80 x 10 -5 Answer: (b) 5.55 x 10 10
- Lewis acidic are a variety one to welcomes an enthusiastic electron pair.
- Lewis acid is actually a positive ion (or) an electron deficient molecule.
- Example, Fe 2+ , CO2, BFstep three, SiF4 etc...
- Lewis feet try a types you to donates an electron few.
- Lewis feet try an enthusiastic anion (or) neutral molecule with atleast you to solitary collection of electrons.
- Example, NH3, F – , CH2 = CH2, CaO etc....
Question 2. Discuss the Lowry – Bronsted concept of acids and bases. Answer: According to Lowry – Bronsted concept, an acid is defined as a substance that has a tendency to donate a proton to another substance and base is a substance that has a tendency to accept a proton from other substance. When hydrogen chloride is dissolved in water, it donates a proton to the later. Thus, HCl behaves as an acid and H2O is base. The proton transfer from the acid to base can be represented as HCl + H2O \(\rightleftharpoons\) H3O + + Cl –
When ammonia is dissolved in water, it accepts a proton from water. In. this case, ammonia (NH3) acts as a base and H2O is acid.