Answer
Concentration of NaX in 50 ml=[NaX]= {(50×8.9)/1000}Mole = 0.445 Mole
Concentration of CuNO3 in the solution = [ CuNO3 ] =
[{(6.2×10-3)×50}/1000}]moles = 3.1 ×10-4 moles

A solution is formed by mixing 50.0 mL of 8.9 MNaX with 50.0 mL of 6.2...
A solution is formed by mixing 50.0 mL of 9.6 MNaX with 50,0 mL of 1.0 x 108 M CuNO3. Assume that Cut forms complex ions with X as follows: Cu+ (aq) + X(aq) + CuX(aq) K1 = 1.0 x 102 CuX(aq) + X- (aq) + Cux,- (aq) Kg = 1.0 x 104 CuX2 - (aq) + X-(aq) = CuXg2- (aq) K3 = 1.0 x 108 with an overall reaction Cu" (aq) + 3X- (aq) + CuX, 2- (aq) K...
OWO References apter 15: EOC stion 16 A solution is formed by mixing 50.0 mL of 9.5 M/ NX with 50.0 ml. of 2.8 x 10-M CUNO, Assume that a forma complex ions with X as follows: stion 17 stion 18 stion 13 1 pt 1 pt pe tpt Cu (aq) +X-(e) CX(a) K -1.0 x 10' CX(g) + (aq) + Cux," () K -1.0 x 10" OuX;"(aq) + (aq) Cux, (a) Ks = 10 X 10' with an overall...
Chapter 15 COC Reference NO,Aume that Out forms complex ions with X as follows Destion 18 Destion 19 Question 20 A solution is formed by mixing 50.0 mL of 10.9 MNX with 500 ml of 8.6 x 10-M Out (g) + X() OXog K; -10 x 10 CuX(aq) + X() - Cux, (a) K; -1.0 x 109 CuX;" ) + X (a) Cux,- (aq) K; -1.0 x 100 with an overall reaction Cu* (eq) +3X" () - CuX; (aq) -10x10'...
A buffer solution is prepared by mixing 50.0 mL of 0.300 M NH3(aq) with 50.0 mL of 0.300 M NH4Cl(aq). The pKb of NH3 is 4.74. Calculate the NH3 concentration in the buffer solution. Calculate the NH4Cl concentration in the buffer solution. Calculate the pH of the buffer solution. 7.50 mL of 0.125 M NaOH is added to the 100.0 mL of the original buffer solution prepared in Question 1. Calculate the new NH3 concentration for the buffer solution. Calculate...
A solution of 350 mL of 0.0470M Cu(NO3)2
are mixed with 1.2 L of 0.8 M Na2X, where X–
represents an unknown ion, acts as a ligand to form a complex ion
with the Cu2+ ion with a coordination number of two.
a) Calculate the equilibrium constant for the
following formation.
Cu2+ +
2X2–
[Cu(X)2]2–
Cu2+ +
X2– CuX
K1 = 1.96
× 104
[Cu(X)2] 2– CuX +
X2–
K2 = 3.88 ×
10–2...
A 50 mL sample of 2.2 x 10^-4 M CuNO3 is added to 50 mL of a 4.0 M NaCN. Cu^+ reacts with CN^- to form the complex ion Cu(CN)3^2- according to Cu^+(aq) + 3CN^-(aq) <--> Cu(CN)3^2- , Kf= 1.0 x 10^9 determine the concentrations of CN^-, Cu^+, Cu(CN)3^2- at equilibrium
A 50.0 mL sample of a 1.00 M solution of CuSO4 is mixed with 50.0 mL of 2.00 M KOH in a calorimeter. The temperature of both solutions was 20.3°C before mixing and 31.7 °C after mixing. The heat capacity of the calorimeter is 12.1 J/K. From these data, calculate AH for the process: CuSO4(1M) + 2KOH(2M) +Cu(OH)2 (s) + K2SO4(0.5M) Assume that the specific heat and density of the solution after mixing are the same as those of pure...
For questions 17 and 18. A solution is prepared by mixing 150.0 mL of 1.0 x 10 M AgNO3 with 200mL of 5.0M Na S O The stepwise formation equilibria are Ag +S203 Ag (S2O3) Ag(S2O3) +S20, Ag(S20s)2 17. What is the concentration of Ag(S203) in solution (5 points): A. 3.8x 10 B. 1.8 x 10 18 C. 4.3x 10 D. 5.6 x 10 K1 7.4 x 10 K2 3.9 x 104
5. A solution is made by mixing 200.0 ml of 1.5 x 10-4 M Cu(NO3)(aq) with 250.0 ml of 0.20 M NH3(aq). Calculate the concentration of copper ion (Cu? (aq)) in the solution when it reaches equilibrium. (Kr for [Cu(NH3)4]2+ = 1.7 x 1013)
23. What is the pH of the solution which results from mixing 50,0 ml. of 0.30 M HF(a) and 50.0 ml. of 0.30 M NaOH(aq) at 25 °C?(K, of HF 7.2 x 10") a. 1.98 b. 5.84 c. 8.16 d. 10.85 e. 12.02