None the the questions in this set require the usage of a calculator. Math difficulties are intended come mimic the level of mathematics intensity that you will check out on the MCAT exam.

You are watching: Which of the following describes a brønsted–lowry acid?


Explanation:

The Bronsted-Lowry meaning of one acid is one of three acid definitions that can be provided on the MCAT. The three definitions are as follows:

Arrhenius acid: rises H+ concentration in water (releases an H+)

Bronsted-Lowry acid: donates a proton to a Bronsted basic (Bronsted bases accept protons)

Lewis acid: accepts a pair of electrons from a Lewis base (Lewis bases donate electrons)

An easy way to mental the difference in between Bronsted-Lowry and also Lewis is that the "e" in Lewis comes prior to the "e" in Bronsted; because of this the Lewis an interpretation has to carry out with electrons.


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Example inquiry #2 : Acids and also Bases


Which that the following defines a Brønsted-Lowry acid?


Possible Answers:

A substance that donates an electron pair


A substance that produces hydroxide ions in one aqueous solution


A substance that donates a proton


A substance that accepts an electron pair


Correct answer:

A substance that donates a proton


Explanation:

There are three definitions for an mountain that are commonly used: an Arrhenius acid, a Brønsted-Lowry acid, and also a Lewis acid. Arrhenius mountain are any type of substances that produce hydrogen ions in solution, and Lewis mountain are any substances that expropriate an electron pair. A Brønsted-Lowry acid is defined as any kind of substance that donates a proton.


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Example inquiry #3 : Acids and also Bases


Acids and bases can be defined in three primary ways. The Arrhenius meaning is the many restrictive. It boundaries acids and also bases to varieties that donate protons and hydroxide ions in solution, respectively. Examples of such acids include HCl and also HBr, if KOH and NaOH are instances of bases. When in aqueous solution, this acids continue to an equilibrium state v a dissociation reaction.

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All the the bases proceed in a comparable fashion.

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The Brønsted-Lowry an interpretation of an mountain is a more inclusive approach. Every Arrhenius acids and bases are additionally Brønsted-Lowry acids and also bases, but the converse is not true. Brønsted-Lowry acids still reach equilibrium through the exact same dissociation reaction as Arrhenius acids, but the mountain character is characterized by various parameters. The Brønsted-Lowry definition considers bases to be hydroxide donors, prefer the Arrhenius definition, but likewise includes conjugate bases such together the A- in the above reaction. In the turning back reaction, A- accepts the proton come regenerate HA. The Brønsted-Lowry definition thus specifies bases as proton acceptors, and acids together proton donors.

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Reducing agents, together as 

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, are supplied to donate hydrogen ion to chemistry species. 
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 will dissociate in equipment to form hydrogen ions, i m sorry then reduce the target compound.

Which of the complying with must be true of 

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 when that is supplied as a reduce agent?


Possible Answers:

It is not an acid, as it donates protons and not hydride ions