Question

5. Which of the following species is amphiprotic in aqueous solution? (a) CH3NH2 c) NH4 (e) HSO (d) F (b) Н:0" 6, Use Table 15.2 (page 529) to decide whether the species on the left or those on the right are favored by the reaction. a. NH4 (aq) + H2PO4" (aq) # NH3(aq) + HsPO b. HCN (aq) + HS(aq) CN" (aq) +H2S c. HCO +OH CO2 H2S d. Al(H20)6 3+ +OH = Al(H20) s2+ OH 7. The equilibrium constant for the auto-ionization of water НаО () %3 н'(аq) + ОН(аq) is 1.0 x 10-14 at 25°C and 3.8 x 10-14 at 40°C. Is the forward process endothermic or exothermic? What is the pH of the water at 40°C? Based on your calculated pH, is this solution acidic or basic? a. b. c. d. Which of the following statements is consistent with this behavior? i. The autoionization of water is an endothermic reaction ii. The autoionization of water is an exothermic reaction. iii. The hydronium ion concentration at equilibrium increases with increasing temperature. iv The hydronium ion concentration at equilibrium decreases with increasing temperature v. Both A and C What is the pOH of a 0.033 M HCI solution? (Calculate first pH of the solution, then nlug the [H+1 in ionic product of water equation. Kw [H+J[OH-], calculate pOH of the solution (b) A saturated solution of Mg (OH)2 is 3.2 x 10 M. What is the H30 (Hydronium ion) and hydroxide ion concentrations in the solution at 25%C 9. What is the hydroxide-ion concentration in a solution formed by combining 200. mL of 0.16 MHCI with 300. mL of 0.091 M NaOH at 25°C? HCI(ag) + NaOH(aq)NaCl(ag)+ H2O() 2

Answer 1

kindly post different questions separately. please rate

amphibrotic species: chemical species that can act as base as well as acid- ЧАДА, WWW/kg) 1504- (aq) acid uttagl & 504²"(aq) HS0u lagl & Hoolll - Hesoulag) + OH-lag) base species . Hence, Hou is an amphiprotic So, option e) is correct