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Rank the following compounds in order of decreasing acid strength using periodic trends. Rank the acids from strongest to weakest.

a. HCl
b. H2S
c. HBr
d. BH3


Sagot :

Answer:

HBr > HCl > H2S > BH3

Explanation:

In many acids, the magnitude of electronegativity of the nonmetal determines the strength of the acid. The less electronegative the non-metal is, the stronger the acidity of the acid.

This is because the less electronegative the nonmetal is, the more easily the H-X bond is broken since it is longer and weaker.

This explains the order of acid strength shown in the answer above.