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There is very little difference in acid ...

There is very little difference in acid strength in the series `H_3PO_3` and `H_3PO_2` because

A

phosphorus in these acids exists in different oxidation states

B

number of unprotonated oxygen responsible for increase of acidity due to inductive effect remains the same

C

phosphorus is not a highly electronegative element

D

phosphorus oxides are less basic.

Text Solution

Verified by Experts

The correct Answer is:
B
`H_3PO_4, H_3PO_3` and `H_3 PO_2` all have equal number of unprotonated oxygen responsible for increase of acidity. So they have very little difference in acid strength.
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There is very little difference in acid strength in the series H_3 PO_4, H_3 PO_3 and H_2 PO_2 because

There is a little difference in acid strength in the series H_3 PO_4, H_3 PO_3 and H_3 PO_2 because

Assertion (A): There is very little difference in acid strength of H_(3)PO_(4), H_(3)PO_(3) ,and H_(3)PO_(2) . Reason (R) : The hydrogens in these acids are not all bonded to oxygens. The electrone-grativities of P and H are almost the same.

Assertion: There is a very little difference in acidic strengths of H_(3)PO_(4),H_(3)PO_(3) and H_(3)PO_(2) . reason: Number of unprotonated oxygen (=O) responsible for increase of acidic strength due to inductive effective remains the same.

What should be the order of acidic strength in the series H_(3)PO_(4) , H_(3)PO_(3) , and H_(3)PO_(2) ?

Basicity of H_3 PO_4 and H_3 PO_3 are

The correct statement for H_3PO_3 and H_3PO_4 is

H_(3)PO_(3) is

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