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LTFEN CEVABINI NASIL ALACAINIZI AIKLAYIN! TEEKKR EDERM 1. 0,20M NH3(aq) ve 0,35 M NH4Cl(aq) olan bir zeltinin pH'n hesaplayn. (Kb(NH3) = 1,8 x 10-5) 2.

LTFEN CEVABINI NASIL ALACAINIZI AIKLAYIN! TEEKKR EDERM

1. 0,20M NH3(aq) ve 0,35 M NH4Cl(aq) olan bir zeltinin pH'n hesaplayn. (Kb(NH3) = 1,8 x 10-5)

2. . PbCl2 iin (Ksp = 2,4 104), 400 mL 9,0 101 M NaCl'ye 0,10 L 6,0 101 M Pb(NO3)2 eklendiinde bir PbCl2 keltisi oluur mu?

A) Evet, nk Q > Ksp. .

B) Hayr, nk Q < Ksp.

C) Hayr, nk Q = Ksp

D) Evet, nk Q < Ksp

3. Elenik baz ve asidin eit konsantrasyonlarda olduu varsayldnda, aadaki karmlardan hangisi optimum pH deeri 4,64,8 olan bir tampon zelti yapmak iin uygundur?

A) CH3COO2Na / CH3COOH (Ka = 1,8 105)

B) NH3 / NH4Cl (Ka = 5,6 1010)

C) NaOCl / HOCl (Ka = 3,2 108)

D) NaNO2 / HNO2 (Ka = 4,5 104) E) NaCl / HCl

4. Bu trlerden hangisi bir Lewis asidi grevi grr?

A) NH3

B) NH4 +

C) H2O

BF3

E) F-

6. 4,0 102 mol zayf monoprotik asit 350. mL suda zldnde, pH 3.05'tir. Asidin Ka's nedir?

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