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Electrolytes

Which is true...

Question

Which is true regarding an aqueous solution of $H_{3} P O_{4}$ at $25^{o} C$ ?

A

It has a very large acid ionization constant

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B

It has a bitter taste

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C

The concentration of

[O H^{-}] > 1.0

x

10^{- 7}

M

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D

It is a weak electrolyte

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E

It can be formed by the reaction of a metal oxide and water

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Solution

The correct option is D It is a weak electrolyte
$H_{3} P O_{4}$ is a weak acid due to which its ionization constant is low. Since it is an acid, it has a sour taste and $[O H] < 10^{- 7}$ $M$ . It cannot be formed by reaction of metal oxide and water. Since it is a weak acid, it acts as a weak electrolyte also. Hence, $H_{3} P O_{4}$ is a weak electrolyte at $25^{o} C$

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Similar questions

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