6) Find [Cu2+] in a solution saturated with Cu(OH)6(SO4) if the pH is fixed at 8.0 at 25°C. Ksp Cu(OH)6(SO4)= 2.3 x 10-69. / Vind [Cu2+] in 'n oplossing versadig met Cu(OH)6(SO4) as die pH vasgestel is op 8.0 by 25°C.

Chemistry (Part -3) =============

3. A solution was prepared by adding 4.95 g sodium acetate (NaC;H;O2) to 250.0 mL of 0.150 M acetic acid (K = 1.75 x 10). Assume negligible volume change. a) What is the pH of the resulting solution? PH: pk2 + log CH3 02) moles saium 4.959 0.06 mol %3D 2cent %3D 82gmu H: -log (1.73x 10) + log 0.24 moles 2cete 250 x 0.15 IL :00375 1000me PH : 4 1.96 O.06 (N2 G Hs0): 0.24m 0.230 L O.0375 : CCHS COOH): 0 15 m Assume 125.0 mL of the solution prepared above was put into a beaker and 82 mg of NaOH was added to it. What is the pH of this new mixture? b)

6. A buffer solution is formed by adding 0.500 mol of sodium acetate (CH3CO2NA) and 0.500 mol of acetic acid (CH3CO2H) to 1.00 L H,0. What is the pH of the solution at equilibrium? (K, = %3D 1.8 x 10°)

Q3 Caleulate the pH of a solution containing (0.1 M) of [Fe+] [Mg+]. knowing that Ksp is for Fe(OH)s= 1410™, and for Mg(OH),= 110712 log3=0.47. log5=0.7

7

NiCO3 (s)  --->  Ni^2+(aq) + CO3^2-(aq)     K1 = 6.6 x 10^-9 HCO3^-(aq) + H2O(ℓ)        CO3^2-(aq) + H3O^+(aq)    K2 = 4.8 x 10^-11 equilibrium constant for the following reaction NiCO3(s) + H3O^+(aq)       --->   Ni^2+(aq) + HCO3^-(aq) + H2O(ℓ)  K3 = ?

1. A 50.0 mL solution of 0.150 M acetic acid (CH3COOH) is titrated with 0.150 M NaOH. What is the pH after 20.0 mL of base has been added? Ka CH3COOH = 1.8 x 10-5 I attached my answer.

SIM LATION LAU 1) Calculate the pH of a solution prepared by dissolving 1.90 g of sodium acetate, CH3COONA, in 85.0 mL of 0.10 Macetic acid, CH3COOH(ag). Assume the volume change upon dissolving the sodium acetate is negligible. Ka of CH,COOH is 1.75 x 10-5. PHASE 1: Calculate pH Complete the following ste pH 1 Calculate ph buffer soluti 2 METHODS O RESET MY NOTES A LAB DATA SHOW LABELS %3D

11.)