Oxygen is more electronegative than sulphur, yet H2S is acidic while H2O is neutral. This is because

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Oxygen is more electronegative than sulphur, yet H₂S is acidic while H₂O is neutral. This is because

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Water is a highly associated compound

H–S bond is weaker than H–O bond

H₂S is a gas while H₂O is a liquid

The molecular weight of H₂S is more

answer is B.

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Electronegativity of oxygen is more than sulfur and the size of O is smaller than S. Therefore, the H−O bond is stronger than H−S bond.
As a result, H₂S easily donates proton and becomes more acidic than water.

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