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One approach for removing dissolved nickel from water is to precipitate it as NiS(s). The standard molar Gibbs energies of Ni2+, NiS(s), and HS are -45.6, -86.2, and 12.0 kJ/mol, respectively. The standard molar Gibbs energy of H* is zero (0.0 kJ/mol) by definition. Use the given thermodynamic data to compute the equilibrium constant for the following reaction: Ni²+ + HS ← NIS(s) + H+

One approach for removing dissolved nickel from water is to precipitate it as NiS(s). The standard molar Gibbs energies of Ni2+, NiS(s), and HS are -45.6, -86.2, and 12.0 kJ/mol, respectively. The standard molar Gibbs energy of H* is zero (0.0 kJ/mol) by definition. Use the given thermodynamic data to compute the equilibrium constant for the following reaction: Ni²+ + HS ← NIS(s) + H+

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Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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One approach for removing dissolved nickel from water is to precipitate it as NiS(s). The standard molar Gibbs energies of Ni²+, NiS(s), and HS are -45.6, -86.2, and 12.0 kJ/mol, respectively. The standard molar Gibbs energy of H* is zero (0.0 kJ/mol) by definition. Use the given thermodynamic data to compute the equilibrium constant for the following reaction: Ni²+ ← → NIS(s) + HS + H+
Transcribed Image Text:One approach for removing dissolved nickel from water is to precipitate it as NiS(s). The standard molar Gibbs energies of Ni²+, NiS(s), and HS are -45.6, -86.2, and 12.0 kJ/mol, respectively. The standard molar Gibbs energy of H* is zero (0.0 kJ/mol) by definition. Use the given thermodynamic data to compute the equilibrium constant for the following reaction: Ni²+ ← → NIS(s) + HS + H+
Expert Solution
Step 1

Given: Ni2+ + HS- ⇔ NiS (s) + H+

The standard molar Gibbs energy of Ni2+ is -45.6 kJ/mol.

The standard molar Gibbs energy of NiS is -86.2 kJ/mol.

The standard molar Gibbs energy of HS- is 12.0 kJ/mol

The standard molar Gibbs energy of H+ is 0 kJ/mol.

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