kiwainguyen
11-20-2010, 07:18 PM
1. the overall stabllity constant(hằng số bền) of [Hg(CN)4]2- is 0.25*10^42. calculate approximately [CN-] in the solution of 0.1M[Hg(CN)4]2-.
2. [Hg2+]=1.3*10^-4 M in the solution of 0.1M [HgCl4]2-. calculate the overall stability constant of [HgCl4]2-.
3.a solution is prepared by adding 25 mL of 0.024M Fe(ClO4)3 with 50 mL 0.015M ZnY2-. calculate [Fe3+] in the solution in case of the hydroxo complex formation is neglected ( the overall stability constant of ZnY2- = 10^16.5 and the overall stability constant of FeY- =10^25.1)
4. calculate [Ni2+] and [Y4-]in a mixture of 0.01M Ni2+ and 0.01M H2Y2- at pH=10 in case of including the hydroxo complex formation of Ni2+ ( the overall stability constant of NiOH+ = 10^4.79, and H4Y, pK1=2.0; pK2=2.67; pK3=6.27; pk4= 10.95).
2. [Hg2+]=1.3*10^-4 M in the solution of 0.1M [HgCl4]2-. calculate the overall stability constant of [HgCl4]2-.
3.a solution is prepared by adding 25 mL of 0.024M Fe(ClO4)3 with 50 mL 0.015M ZnY2-. calculate [Fe3+] in the solution in case of the hydroxo complex formation is neglected ( the overall stability constant of ZnY2- = 10^16.5 and the overall stability constant of FeY- =10^25.1)
4. calculate [Ni2+] and [Y4-]in a mixture of 0.01M Ni2+ and 0.01M H2Y2- at pH=10 in case of including the hydroxo complex formation of Ni2+ ( the overall stability constant of NiOH+ = 10^4.79, and H4Y, pK1=2.0; pK2=2.67; pK3=6.27; pk4= 10.95).