Question:
$ P_4O_{10} $ dissolves in water to give
$ P_4O_{10} $ dissolves in water to give
Updated On: Aug 15, 2022
- phosphorous acid
- orthophosphoric acid
- hypophosphorus add
- pyrophosphoric add
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The Correct Option is B
Solution and Explanation
Phosphorus pentoxide, $P_4O_{10}$ has great affinity for water and gives orthophosphoric acid as final product.
It is therefore named phosphoric anhydride.
$P_4O_{14} {->[2H_2O]} \underset{\overset{\text{metaphosphoric}}{\text{acid}}}{4 HPO_3} {->[2H_2O]}$
$ \underset{\overset{\text{pyrophosphoric }}{\text{acid}}}{2 H_4P_2O_7} {->[2H_2O]} \underset{\text{orthophosphoric acid}}{4H_3PO_4}$
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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