Strongest conjugate base is

Please do not block ads on this website. So Cl - must be a weak base, it has very little tendency to accept a proton.

Through examples found in the sections on acids and bases proton-transfer processes are broken into two hypothetical steps: 1 donation of a proton by an acid, and 2 acceptance of a proton by a base. Water served as the base in the acid example and as the acid in the base example [ amphiprotic ]. The hypothetical steps are useful because they make it easy to see what species is left after an acid donated a proton and what species is formed when a base accepted a proton. We shall use hypothetical steps or half-equations in this section, but you should bear in mind that free protons never actually exist in aqueous solution. Suppose we first consider a weak acid , the ammonium ion.

Strongest conjugate base is

Post by » Sun Jan 16, pm. Post by » Mon Jan 17, am. Laurence Lavelle Skip to content. Quick links. Email Link. Identifying the Strongest Conjugate Base Post by » Sun Jan 16, pm Among these three molecules, which has the strongest conjugate base? Can someone please explain what my thought process should be? Right away, you know that H2SO4 produces the weakest conjugate base because it is the strongest acid one of the strong acids that we should have memorized. With CF3COO-, because fluorine is so electronegative, it attracts some of the negative charge on the O-, stabilizing the molecule. The oxygen is not so negative, and so it has a weaker pull on hydrogen ions weaker base. Therefore the thought process is looking for the acids that will ionize the least usually have strong bonds holding the H , therefore giving them stronger conjugate bases. Re: Identifying the Strongest Conjugate Base Post by » Sun Jan 16, pm you need to use the concept of the conjugate seesaw: the stronger the acid, the weaker the conjugate base and the weaker the acid, the stronger the conjugate base. In basic salts, the anion is the conjugate base of a weak acid. Re: Identifying the Strongest Conjugate Base Post by » Mon Jan 17, am Weak acids have strong conjugate bases, so whichever acid is the weakest will have the strongest conjugate base out of the three. For a question like this is, remembering the conjugate seesaw is extremely useful.

A strong acid like HCl donates its proton so readily that there is essentially no tendency for the conjugate base Cl — to reaccept a proton. Identifying the Strongest Conjugate Base Post by » Sun Jan 16, pm Among these three molecules, which has the strongest conjugate base?

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See this Socratic answer. A conjugate base contains one less H atom and one more - charge than the acid that formed it. Let us take the example of bicarbonate ions reacting with water to create carbonic acid and hydronium ions. It has one less H atom and one more — charge. Acid strength is determined by the amount of that acid that actually ionizes. All other acids are weak acids and ionize to a much lesser amount.

Strongest conjugate base is

Last time I started writing about acid-base reactions. We looked at this list of stabilities of anions going across the topmost row of the periodic table. Because of this, we were able to say that H-F was the most acidic, because it had the most stable conjugate base. And H-CH 3 methane was the least acidic, because it had the least stable conjugate base. Instead of starting with HF, H 2 O, H 3 N, and CH 4 and asking how likely they are to donate a proton to a common base water in our example , imagine we start with the anions [ F — , HO — , H 2 N — and H 3 C — ] and have them take a proton away from a common acid such as water. The same principle applies. The less stable the anion, the more likely the reaction will be to proceed to completion.

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The difference between the other two weak acids is the "F" or "H". Water served as the base in the acid example and as the acid in the base example [ amphiprotic ]. Through examples found in the sections on acids and bases proton-transfer processes are broken into two hypothetical steps: 1 donation of a proton by an acid, and 2 acceptance of a proton by a base. The term "weak" is not well defined, that is, a weak acid is one that only partially dissociates ionises. For this reason there is a continuum of weakness of acid, that is, some weak acids are weaker than others. CH 3 NH 2 is an amine and therefore a weak base. The weaker the acid, the stronger the conjugate base. Do you understand this? Can someone please explain what my thought process should be? Hence, H 2 is a very weak acid.

Now that we know how to quantify the strength of an acid or base, our next job is to gain an understanding of the fundamental reasons behind why one compound is more acidic or more basic than another. This is a big step: we are, for the first time, taking our knowledge of organic structure and applying it to a question of organic reactivity.

The first reaction cannot possibly occur to any extent since HCO 3 — is a very weak acid and HSO 4 — is a base whose strength is negligible. Unless you have been given a list of acids to memorise as weak, very weak etc, these terms are quite arbitrary, and should only be used to compare the strength of one acid with another. The stronger the acid, the weaker the conjugate base. Consequently, Cl — is a very weak base. Adding a proton to the strong base OH — gives H 2 O its conjugate acid. Go back to previous article. The term "weak" is not well defined, that is, a weak acid is one that only partially dissociates ionises. The hypothetical steps are useful because they make it easy to see what species is left after an acid donated a proton and what species is formed when a base accepted a proton. Another example, this time starting with a weak base, is provided by fluoride ion:. I would look for the acid that ionizes the least strong acids ionize completely in water , then proceed from there. By contrast, reactions with little or no tendency to occur between the weak acids at the bottom left and the weak bases at the top right correspond to a line from acid to base with an uphill slope. Hydrogen carbonate ion, HCO 3 — , is derived from a diprotic acid and is amphiprotic. Identifying the Strongest Conjugate Base Post by » Sun Jan 16, pm Among these three molecules, which has the strongest conjugate base? Play the game now!