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Specify what ions are present upon dissolving each of the following substances in water: (a) MgI₂, (b) K₂CO₃, (c) HClO₄, (d) NaCH₃COO?

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Final answer:

When MgI₂ dissolves in water, it produces Mg²⁺ and 2I⁻ ions. K₂CO₃ dissociates into 2K⁺ and CO₃²⁻ ions. HClO₄ dissociates into H⁺ and ClO₄⁻ ions. NaCH₃COO dissociates into Na⁺ and CH₃COO⁻ ions.

Step-by-step explanation:

When MgI₂ dissolves in water, it dissociates into Mg²⁺ and 2I⁻ ions. This is because MgI₂ is a salt and it breaks down into its constituent ions in aqueous solution.

When K₂CO₃ dissolves in water, it dissociates into 2K⁺ and CO₃²⁻ ions. Again, this is because K₂CO₃ is a salt and it dissociates into ions in water.

When HClO₄ dissolves in water, it dissociates into H⁺ and ClO₄⁻ ions. HClO₄ is a strong acid that completely ionizes in water.

When NaCH₃COO dissolves in water, it dissociates into Na⁺ and CH₃COO⁻ ions. NaCH₃COO is a salt and it dissociates into its constituent ions in aqueous solution.

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