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need help with 35 and 36 please.
5H5NH D) H3NOH E) NH4 and NH3CH3 L. C. 34) A 0.1 M solution ofhas a pH of 7 04) A) Na2S B) NaF C) NaNO3 D) NH4CI E) KF 35) Calculate the pOH of 0.606 M anilinium hydrochloride (C6HsNH3Cl) solution in water, given that 35) Kb for aniline is 3.83 x 10-4 B) 12.42 D),8.0 1.2 E) 1.82 A) 5.40 e acid-dissociation constants of phosphoric acid (H3PO4) are Kal = 7.5 x 10 3, Ka2″ 62 x 10-8, d Ka3 42 10-13 at 25.0 °C. What is the pH of a 25 M aqueous solurtion of phosphoric acid? C) 12.18 36) A) 0.86 B) 0.13 C) 1.82 D) 2.51 E) 0.40 37) 37) Of the following substances, an aqueous solution ofwill form basic solutions. NH4CI Cu(NO3)2 K2CO3 Na A) R2CO3, NH4CI B NaF only C) NaF, K2Co3 D) NH4CI only ENH4CI, Cu(NO32 38 38) A Brønsted-Lowry acid is defined as a substance that nlared in H2O
Expert Answer
Ans 35 E) 1.82
C6H5NH3Cl + H2O = HC6H5NH3Cl + OH–
kb = [HC6H5NH3Cl] [OH-] / [C6H5NH3Cl]
3.83 x 10-4 = x2 / (0.606 – x)
x = 0.015
x = [OH-] = 0.015
pOH = -log[OH-]
pOH = -log (0.015)
pOH = 1.82
