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Solubility Ksp Calculations

How do you complete a solubility Ksp problem?

What is the solubility of aluminum hydroxide in water at 25 degrees Celsius if the Ksp is 3 x 10^-34? What is the concentration of Hydroxide at equilibrium?

What is the concentration of a sulfide ion in a 1L solution of cuprous sulfide to which .03mol of cuprous nitrate has been added? The Ksp of cuprous sulfide is 8 x 10^-37

Please post all steps. Thanks!

Solution Summary

This solution is provided in 480 words in an attached .doc file. It uses the balancing of the precipitate dissociation reaction as a step to solving the problem.