Question

1. Which of the followi ch of the following reactions is not readily explained by the Arrhenius concept of acids and bases? a. A. HCl(aq) + NaOH(aq) - NaCl(aq) + H20() b. H30(aq) + OH-(aq) + 2H20(1) c. HCI(g) + NH3(g) - NH4Cl(s) d. HC2H302(aq) + H2O(l) H30*(aq) + C2H302-(ag) e. H30 (aq) + OH-(aq) + 2H2O(aq) 2. Classify each of the following species as Brønsted acid or base or both: a) H20, b) OH", c) H30, d) NH3, e) NHA. f) NHg) NO3, h) CO32-. i) HBr, j) HCN 3. i). Write the formula of four strong acids and four strong bases. ii). List four factors that affect the strength of an acid. iii). Predict the relative strength of the following compounds: H2O, H2S and H2Se. iv). Which of the following is the stronger acids: CHCICOOH or CHCI-COOH? Explain. v). Al is not a Bronsted acid, Al(H2O). * is. Explain. vi). All Bronsted acids are Lewis acids, but the reverse is not true. Give two examples of two Lewis acids that are not Bronsted acids. vii). Which of the following is the stronger base: NH3 or NF3? viii). Which of the following is the stronger Base: NH3 or PH: ? 4. a. Describe the hydration of SO3 as a Lewis acid-base reaction. b. Identify Lewis acid and Lewis base in each of the following reaction:

Answer 1

Saluhm (1) Nacl(ag) + H0( 4) (a) Hdl on)NaOHo4) explain by this be reactim Can Arrhenins Con ca pt, discociates because Hcl into water and into Ht and C ond OH audd Nat crsso iates iuto Na OH forun and Nac H20 (b) H30t(a OHT()- H,0() _ Hig0t (ar Ht)Cou bi follow H20 to OH Amlanius Con cepe also So, it (C) H) NHs () Arthenius Concepr uet 2t does bases. auds and Sol ution aud hot agueous Hcl is So t ive OHT NH does arr-honius base. is

(d) HCsHo, Cag) + H0) Hao (o) +CH,0 So HCH02 sofh ives aqueus arrlenus base arr lenius act folls Comcapt H20t OH (0) 2 H20 Ca4) ives H20 to Cemablue Arybewins Ca Capt follas also So, it