Author Question: To a concentrated buffer of pH 9.0 was added an equal volume of an aqueous solution that was 0.20 M ... (Read 53 times)

appyboo · **on:** Jul 8, 2021

To a concentrated buffer of pH 9.0 was added an equal volume of an aqueous solution that was 0.20 M in each of the ions Ca²⁺, Cd²⁺, and Cu²⁺. The expected precipitate would consist of:

salt: calcium hydroxide cadmium hydroxide copper(II) hydroxide
K_sp: 4.0 × 10^-6 2.0 × 10^-14 1.8 × 10^-19
◦ only Ca(OH)₂
◦ only Cd(OH)₂
◦ only Cu(OH)₂
◦ only Cd(OH)₂ and Cu(OH)₂
◦ Ca(OH)₂, Cd(OH)₂, and Cu(OH)₂

bubulittle310@msn.cn · **Reply #1 on:** Jul 8, 2021

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