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Indicate whether the substance exists in aqueous solution (a) entirely in molecular form, (b) entirely as ions, (c) or as a mixture of molecules and ions. HF, CH3CN, NaClO4, Ba(OH)2

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Answer:

In aqueous solution, HF is an acid, exist as a mixture of molecules and ions

CH3CN is none of the above, entirely in molecular form

NaCIO4 is a salt, entirely as ions

Ba(OH)2 is a base, entirely as ions

The substance exists in aqueous solution entirely in molecular form is Methyl cyanide, entirely as ions is NaClO₄ & Ba(OH)₂ and HF as a mixture of molecules and ions.

What is aqueous solution?

Aqueous solutions are those solution in which water is present as a solvent and we know that nature of water is polar in water means it consist positive or negative charges.

  • HF is a weak acid and it shows partial dissociation only, so it is present in the mixture form of molecules and ions.
  • Methyl cyanide is a covalent molecule not dissolve in aqueous solution and present in the molecular form.
  • NaClO₄ is a salt and it is completely dissolve in aqueous solution and present in the ions form.
  • Ba(OH)₂ is a strong base and it is also completely dissociates into their ions.

Hence NaClO₄ & Ba(OH)₂ is completely dissociates into ions.

To know more about aqueous solution, visit the below link:
https://brainly.com/question/14554879

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