Question

Explain -H2O is Liquid but H2S is a gas.

Solution
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  • H2S is a gas and water is liquid at room temperature. Water exists as a liquid however hydrogen sulphide exists as gas because there is strong hydrogen bonding between the water molecules due to the high electronegativity of the oxygen atom. However, the extent of hydrogen bonding is not considered as the electronegativity of sulphur atoms is less.
  • Whereas Sulphur is less electronegative than oxygen, and the S-H bond is much less polar than the O-H bond. Hence, there is no hydrogen bonding in hydrogen sulphide, and it exists as a gas.

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Similar Questions
Q1

Why H2O is a liquid while H2S is a gas

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Q2

At room temperature H2O is a liquid while H2S is a gas, the reason is:

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Q3

Assertion : At 25oC and 1 atmospheric pressure, H2O is a liquid but H2S is a gas
Reason : The molecular weight of H2O is less than that of H2S

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Q4

The molecular weight of H2S is more than that of H2O, but H2S is a gas and H2O is a liquid. Explain.

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Q5
H2O is liquid but H2S is gas. This is because of:
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