Question:
The true statement for the acids of phosphorus, $H_3PO_2$,
$H_3PO_3$ and $H_3PO_4$ is
The true statement for the acids of phosphorus, $H_3PO_2$,
$H_3PO_3$ and $H_3PO_4$ is
Updated On: Jul 27, 2022
- the order of their acidity is $H_3PO_4 > H_3PO_3 > H_3PO_2$
- all of them are reducing in nature
- all of them are tribasic acids
- the geometry of phosphorus is tetrahedral in all the three
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
$H_3PO_2, H_3PO_3$ and $H_3PO_4$ contain one, two and three ionisable hydrogen atoms respectively.
$ {H3PO2 <=> H+ + H2PO2^-}$
$ {H3PO3 <=> H+ + H2PO3^-}$$ { <=> H+ + HPO3^{2-}}$
$ {H3PO4 <=> H+ + H2PO4^-}$$ { <=> H+ + HPO4^{2-}}$
$ { <=> H+ + PO4^{3-}}$
But there is very little difference in acidity.
As P is $sp^3$ hybridised in all therefore all are tetrahedral.
Was this answer helpful?
0
0
Top AIIMS Chemistry Questions
- Freon used as refrigerant is
- Which of the following statement is true ?
- Natural rubber is a polymer of
- In Wolff-Kishner reduction, the carbonyl group of aldehydes and ketones is converted into
- $0.037\, g$ of an alcohol, $R$-OH was added to $C _{2} H _{5} MgI$ and the gas evolved measured $11.2\, cc$ at STP. The molecular mass of $R- OH$ will be
View More Questions
Top AIIMS p -Block Elements Questions
- Which element belongs to $4n$ series?
- Consider the sequence of oxides : $Na _{2} O , SiO _{2}$, $P _{4} O _{10}$. Which factor decreases from $Na _{2} O$ to $SiO _{2}$ and also from $SiO _{2}$ to $P _{4} O _{10}$ ?
- : $p$-chlorobenzoic acid is stronger acid than benzoic acid. : Chlorine has electron donating resonance $(+ R )$ effect.
- Which of the following contains atleast one lone pair in all of its halides?
- Which of the following is paramagnetic?
View More Questions
Top AIIMS Questions
- Which of the following is true?
- The ratio of the dimensions of Plancks constant and that of the moment of inertia is the dimension of
- Biological Oxygen Demand (BOD) is a measure of
- Freon used as refrigerant is
- Which of the following statement is true ?
View More Questions
Concepts Used:
P-Block Elements
- P block elements are those in which the last electron enters any of the three p-orbitals of their respective shells. Since a p-subshell has three degenerate p-orbitals each of which can accommodate two electrons, therefore in all there are six groups of p-block elements.
- P block elements are shiny and usually a good conductor of electricity and heat as they have a tendency to lose an electron. You will find some amazing properties of elements in a P-block element like gallium. It’s a metal that can melt in the palm of your hand. Silicon is also one of the most important metalloids of the p-block group as it is an important component of glass.
P block elements consist of:
- Group 13 Elements: Boron family
- Group 14 Elements: Carbon family
- Group 15 Elements: Nitrogen family
- Group 16 Elements: Oxygen family
- Group 17 Elements: Fluorine family
- Group 18 Elements: Neon family