Question

the prou modynamics, action .ReQt the concept of Qud and base in the tum 504 Lewis theory with reference to the following re Oct on i de alge rompress constant 1.82 (Niagtt H, O HC N1041054941 (2 marks) l 'riment Determin for the il til A buffer Solutions prepared by dissolving 0.040 mo! Of ammonium chloride and 0.10 mol of ammonia in water. The solution is made up to n.odm. Determine the pH of this butter solution. Ka for NH+ = 5.5 x 100 (3 marks) 2N -F or the - 4KCI alculate and As=-3 m +988 odium Qultate, NO CH3COOH, 29 USOdos a common food additive and a laboratory reagent Colowrote pH of ©-05 M Solution of NQCH COOH. Ko for CH3COOH = 1:8x10 to onsponta sontane rate the iv) A Solution of sodium hypochloriti, Nool] wos prepared of pH 10-3. Calculate the concentro Hon of this alt formid. Grin ko for hypochlorous oud, H00123.0x108 15 marks) aneous.

Can you help me answer questions b and c.thank you so much for your help

Answer 1

B) i) cntho 4CN + ore. According to Lew is acid base Theory Electon pair acceptor Lewis and (set) Electon donar lewis base ccm) Nhach & NH₂ is basic buffer pon - pkb tlog [CA ] (Kalnut = 5-54100 [ base ] K6= K = L y lo to 0.168 por 0.04 - P = 0.18 X10 0. pon 4.75 Hog ont pox - 4.75+ (0.602-1) pox - 4.35 pH = 14 -por => pH = 14-2.35 pH = 9.648 CH3COONa is a salt of weak and & string bare Pon - 7+ 1 [pka log c] formula = 7+1 (4.74 + log o.os - 3+ [4.74 - 1.301] - 7+ 1.7195 1 pH 8.7195 log C= -009 Noord tho ² Noont Hoce salt of weak acid & string ph_ 7 + + (pka Hese) 103 = 4 + 2 (7.5+ loge) c= anti bgton bare C=0.406 (05)

c> isy HNO3 + NH3 (NA) No3 M1=0.5m My = 015 V=20m ₂ = 2001 (NO)ant = Reu) base The Neutral resulting solue is pH = 7 111) pod of 02.50 m N₂ M4 Solo Ky = 8946 7 Nak4 ton nategt ton 2.5 0 0. : 205-2 7 z Ky= 22 - kg - nie 25 205- x= 105x10 -3 pan -log[on] = -log[1.5x103) pon - 2.823 pH = 14 pon = 14 -20823 = 11-177 plepka log [ozcoo] 1 [crearoon] [c-B] i) = prepka = 4 - 4.75 [c.o] anti log COAT) Cacid] - ung - 0.472