Question

Water is a liquid and hydrogen sulphide is a gas, although the molecular mass of hydrogen sulphide is almost double that of water. Explain.

Answer 1

The mass of $H_{2}S$ is double than that of water but $H_{2}O$ is liquid and $H_{2}S$ is gas.

In $H_{2}O$, there are Hydrogen bonds present because of Oxygen's small size and high electronegativity. So as

Water has Hydrogen bonds which leads to stronger forces of attraction so it is in liquid state.

Hydrogen sulphide tras no hydrogen bonds and stays in gaseous state.