Table of Contents
Which is more acidic H3PO2 or H3PO3 or H3PO4?
Answer. Hello Aspirant, The correct acidic strength order is H3PO2>H3PO3>H3PO4.
Which of the following Oxoacids is the strongest?
Therefore, HOCl is the strongest acid and HOI is weakest, and acid strength decreases as the central halogen descends on the periodic table.
Which acid is stronger H3PO4 or H3AsO4?
The pKa values for H3AsO4 and H3PO4 are 2.30 and 2.12 which indicate that H3PO4 is a stronger acid compared to H3AsO4.
Why H3PO2 is stronger acid than H3PO3?
Oxygen is a highly electronegative element, and so if there are more oxygen atoms present, more of the molecule’s electron density will be pulled off the O-H bond, weakening it and creating a stronger acid. By the same reasoning, H3PO3 Phosphorous acid is second, and H3PO2 Phosphinic acid is least acidic of the three.
Which one is the strongest acid H3PO4?
Originally Answered: Among H3PO4 ,H3PO3,and H3PO2 which is strongest acid? Basicity of H3PO4, H3PO3 and H3PO2 are 3, 2 and 1 respectively. Therefore, H3PO4 is strongest acid.
Are oxoacids strong acids?
All oxoacids have the acidic hydrogen bound to an oxygen atom, so bond strength (length) is not a factor, similar to binary nonmetal acids; instead, the main determining factor for an oxacid’s relative strength has to do with the central atom’s electronegativity (X), as well as the number of O atoms around that central …
Is H3PO2 a strong acid?
H3PO2 is a weak monobasic acid.
Why is H3PO4 a stronger acid than H3PO3?
H3PO3 is more polar, so the O-H bonds will be weaker, making the H+ easier to come off, and causing H3PO3 to be more acidic than H3PO4.
Is H3PO4 strong or weak?
H3PO4 is a weak acid because it undergoes partial dissociation on dissolving in water or aqueous solution and produces a low amount of hydrogen ion. More the hydrogen ion in solution high is the strength of acidity of the compound. The pKa value of H3PO4 is around 2.14.
Why is H3PO4 strong acid?
A strong acid is an acid which is completely ionized in an aqueous solution. Hydrogen chloride (HCl) ionizes completely into hydrogen ions and chloride ions in water….Strong and Weak Acids and Acid Ionization Constant.
| Acid | |
|---|---|
| Weak Acids | |
| H3PO4 (phosphoric acid) | H2PO−4 (dihydrogen phosphate ion) |
| CH3COOH (acetic acid) | CH3COO− (acetate ion) |
What is the Order of acidic strength (acidic character) among h3po4/h3po3 and H3 PO2?
Order of acidic strength (acidic character) among H3PO4, H3PO3 and H3PO2 is H3PO4 (pka 2.1) < H3PO3 (pka 1.5) < H3PO2 (pka 1.3) The acidic character of oxyacids of same elements which is in different oxidation state increases with the increase if it’s oxidation state. Also number of P – OH bond increases the acidity of species decreases
Why is H3PO4 acidic in nature?
In some textbooks, general rule followed is higher the oxidation state of central atom, more is the acidic nature. Now this is correct for some acids but not all. This is an exception. This is attributed to the fact that cross resonance takes place in the conjugate base of H3PO4 and H3PO3.
Which of the following is the strongest acid in the series HClO4?
For this series HClO4 is the strongest followed by H2SO4 followed by H3PO4. Phosphoric acid, H3PO4 (aq), is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH, and the concentrations of all species in a 0.300 M phosphoric acid solution. kPa1: 2.16 kPa2: 7.21
What is the Order of acidity of oxyacids of phosphorous?
As far as we can guess the exceptional acidic order of oxyacids of phosphorous is similar to that of amines (in organic chemistry). There exists an interplay between the oxidation state factor and cross resonance factors. Oxidation state: Higher the oxidation state greater the acidity so order would be H3PO4>H3PO3>H3PO2.