2023

Chemistry

POST UTME

Why is H $_2$ S a gas and H $_2$ O. a liquid at room temperature?

A.

H $_2$ S has a higher molar mass

B.

H $_2$ O contains hydrogen bonds in its molecules

C.

H $_2$ S has acidic properties

D.

H $_2$ 0 is a universal solvent

Correct Answer:
H $_2$ O contains hydrogen bonds in its molecules

Explanation

compared to H $_2$ S, the molecules in H $_2$ O are held together more tightly by hydrogen bond

compared to H $_2$ S, the molecules in H $_2$ O are held together more tightly by hydrogen bond

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