Question

UALIDS AND BASES Predicting the qualitative acid-base properties of salts Try again... Try Again Consider the following data on some weak acids and weak bases: acid base name formula name formula hydrofluoric acid HF 6.8 x 10-4 3.010-8 methylamine CH3NH2 4.4 x 10-4 ammonia NH; 1.8x10-5 hypochlorous acid HCIO Use this data to rank the following solutions in order of increasing pH. In other words, select a 'l' next to the solution that will have the lowest pH, a '2' next to the solution that will have the next lowest pH, and so on. solution pH 0.1 M CH3NH3Br 0.1 M NH4Cl 27 0.1 M NaClo 1 (lowest) 0.1 M KBr 4 (highest)

Answer 1

H₂Br CH₂NH₂ + Br CANH + Ho 3 + HO 0:1 + x x initial change equilibrium kaikb=kw ka= 10x1014 hinx 154 = 2.27x16" (O.-x) (0.1-x) 1 x x kar [CM NHz] [tag] * I canille 2127x10"- x = 151x106m PH = -4 5 x16+) ¥5.82 2) Whpel Nota NẾ, + H NH, HỆ 0.1 o inicial 4x change Cool-se) X equilibrium kaikba kw kas tox1014 T8X165 75.55 X ID 5.55x100= X (0.1-x) = 2 = 7.45x16M pH = Hog(7.45X106) → 5113 3) Nado Na+ clo do thot hdlo + oH 0.1 (O.-*) x equilibrium kaikh = kw O +3 o + inikal change kb= lox10 14 - 3.0x108 - 3133 x16 3:33x10' = XF1.82x10-4 poH = -log(1.82x154) 3.74 pH +pOH = 1# pH = 14-3-74 = 1026 A) KBY is a salt of strong and and strong base, and has a pH Increasing pH order NHACK CH₂ NH Bra KBr < Nado 7.