Phosphorus pentaoxide reacts with $H_{2} O$ to form an acid. What is the basicity of that acid?

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Solution

The correct option is C 3
Option $(B)$ is correct.
Phosphorus pentaoxide reacts with $H_{2} O$ to form phosphoric acid.
$P_{2} O_{5} + 3 H_{2} O \to 2 H_{3} P O_{4}$
Basicity of phosphoric acid is 3.Basicity of an acid refers to the number of replaceable hydrogen atoms in one molecule of the acid
$H_{3} P O_{4} (a q) \to 3 H^{+} (a q) + P O_{4}^{3 -} (a q)$

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Similar questions

P C l_{3}

Which of the following gas is formed when phosphorus reacts with conc. nitric acid?

P - O - P

X = C

Y = N a

Z = B r

	Hydride of X	Hydride of Y	Hydride of Z
(A)	Colourless gas insoluble in $H_{2}$	Silver/grey solid, reacts with $H_{2} O$ to form an alkaline solution	Colourless gas form a strong acid in $H_{2} O$
(B)	Colourless liquid, no reaction with $H_{2} O$	Silver/grey solid, forms $H_{2} O$	Ionic solid with formula $Z H$
(C)	Colourless gas found naturally	Does not conduct electricity in the molten state	Colourless gas, reacts with $C l_{2}$
(D)	Non-polar compound reacts with $C l_{2}$ in light	Silver/grey ionic solid with formula $Y H_{2}$	Forms when water is added to phosphorus and element Z

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