Metal cations in solution are complexed to H2O molecules and exist as hydrated ions. For example, Ni2+ complexes to form the hydrated ion Ni(H2O)62+. Metal cations are also able to complex to other ligands, such as NH3. Part 1 An aqueous solution is prepared in which 0.00166 mol Ni(NO3)2 and 0.353 mol NH3 are dissolved in a total volume of 1.00 L. Classify the species present in the resulting solution according to their relative amounts. Kf for Ni(NH3)62+ is equal to 5.5 × 108. Part 2 Write the expression for the dissociation constant needed to determine the concentration of Ni(H2O)62+ ions at equilibrium in the solution formed in Part 1. Kd = ___________ Part 3 Calculate the concentration of Ni(H2O)62+ ions at equilibrium in the solution formed. ______ M
Metal cations in solution are complexed to H2O molecules and exist as hydrated ions. For example, Ni2+ complexes to form the hydrated ion Ni(H2O)62+. Metal cations are also able to complex to other ligands, such as NH3.
Part 1
An aqueous solution is prepared in which 0.00166 mol Ni(NO3)2 and 0.353 mol NH3 are dissolved in a total volume of 1.00 L.
Classify the species present in the resulting solution according to their relative amounts. Kf for Ni(NH3)62+ is equal to 5.5 × 108.
Part 2
Write the expression for the dissociation constant needed to determine the concentration of Ni(H2O)62+ ions at equilibrium in the solution formed in Part 1.
Kd = ___________
Part 3
Calculate the concentration of Ni(H2O)62+ ions at equilibrium in the solution formed.
______ M
Please answer all three parts.
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