H2S is more acidic than H2O. The reason ...

`H_2S` is more acidic than `H_2O`. The reason is

`O-H` bond is stronger than `S-H` bond

`O` is more electronegative than S

`H-S` bond is stronger than `O-H` bond

`O-H` bond is weaker than `H-S` bond

Text Solution

Verified by Experts

The correct Answer is:

To release `H^(+)` (proton), the `H-E` (E stands for element which may be O or S) bond must be broken. On account of relatively large size of S atom, the `H-S` bond is weaker than the `O-H` bond and, hence, easy to break.

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H_(2) S is move acidic than H_(2)O . The reason is

O-H bond is stronger than S-H bond

O is more electronegative than sulphur

H-S bond is weaker than O-H bond

O-H bond is weaker than H-S bond

Assertion (A) : H_2S is more acidic than H_2O . Reason (R) :H-S bond is more polar than H-O bond.

Both A and R true and R is the correct explanation of A

Both A and R true and R is not a correct explanation of A

A is true but R is false

A is false but R is true

Assertion : H_(2)S is stronger acid than PH_(3) . Reason : S is more electronegative than P, conjugate base HS^(− ) is more stable than H_(2)P^(−) .

If both assertion and reason are true and reason is the correct explanation of assertion.

If both assertion and reason are true but reason is not the correct explanation of assertion.

If assertion is true but reason is false.

If both assertion and reason are false.