91Ó°ÊÓ

Question:A saturated solution of a slightly soluble electrolyte in contact with some of the solid electrolyte is said to be a system in equilibrium. Explain. Why is such a system calling a heterogeneous equilibrium?

Question: Calculate the equilibrium concentration of Ni²⁺ in a 1.0 M solution\(\left( {Ni{{\left( {N{H_3}} \right)}_6}} \right){\left( {N{O_3}} \right)_2}\).

Question: Calculate the equilibrium concentration of Zn²⁺ in a 3.0 M solution of\(Zn(CN)_4^{2 - }\) .

Question:Calculate the equilibrium concentration of Cu²⁺ in a solution initially with 0.050 M Cu²⁺ and 1.00 M NH₃.

Question:Calculate the equilibrium concentration of Zn²⁺ in a solution initially with 0.150 M Zn²⁺and 2.50 M CN^-.

Question: Calculate the Fe³⁺ equilibrium concentration when 0.0888 mole of K₃[Fe (CN)₆] is added to a solution with 0.0.00010 M CN^–.

Write the ionic equation for dissolution and the solubility product \(({K_{sp }})\) expression for each of the following slightly soluble ionic compounds:

\(\begin{array}{l}\;(a)PbC{l_2}\\\;(b)A{g_2}S\\\;(c)S{r_3}{\left( {P{O_4}} \right)_2}\\\;(d)SrS{O_4}\end{array}\)

Question: Calculate the Co²⁺ equilibrium concentration when 0.100 mole of [Co (NH₃)₆] (NO₃)₂ is added to a solution with 0.025 M NH₃. Assume the volume is 1.00 L.

Question: The equilibrium constant for the reaction Hg²⁺(aq) + 2Cl^−(²¹±ç)⇌H²µ°ä±ô₂ (aq) is 1.6 × 10¹³. Is HgCl₂a strong electrolyte or a weak electrolyte? What are the concentrations of Hg²⁺ and Cl^– in a 0.015-M solution of HgCl₂?