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Asked: 2022-04-11T18:35:11+00:00 In:

Rank the following four acids in order of increasing bronsted acidity.

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Rank the following four acids in order of increasing bronsted acidity :
  • H2F+ 
  • CH3OH
  • (CH3)2OH+ 
  • CH3SH2+

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♦ Relevant knowledge
Bronsted Acid

The species that gives proton (H+) in the solution are referred to as Bronsted acids, in accordance with the theory of Bronsted-Lowry. After the removal of the protons (H+) the acid transforms into the base of its conjugate.

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    Concepts and Reason

    Bronsted Lowery acid is a proton donor, and Bronsted Loery base is a proton taker. The polarity between the hydrogen and central atoms determines the strength and basicity of Bronsted-Lowery bases and acids.

    First, identify the central atom of the acidic species. Next, compare the electronegativity differences between hydrogen and central atoms and then compare the species’ bond polarity.

    Fundamentals

    Bronsted-Lowery theory states that a chemical compound which donates [katex]{{\rm{H}}^ + }[/katex] is a chemical compound.

    Bronsted acid [katex]{{\rm{H}}_2}{{\rm{F}}^ + }[/katex] central atom

    Bronsted-Lowry acid [katex]{{\rm{H}}_2}{{\rm{F}}^ + }[/katex]

    The species’ Bronsted acidity is as follows:

    H2F > CH3OH > CH3SH2 > (CH3)2OH

    Answer:

    This is the increasing order of Bronsted acidity:

    H2F > CH3OH > CH3SH2 > (CH3)2OH

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