Interpretation: Relative acid strengths of given compounds has to be predicted.
Concept Introduction: An compound which has hydrogen bonded to a non-metallic atom is known as binary acid. The strength of binary acid depends upon the strength of the bond formed between hydrogen and the non-metallic atom. The weaker the bond between hydrogen and non-metallic atom, the more strong the binary acid will be. The strength of binary acid increases down the group when the non-metallic atoms forms the binary acid. This is because the bond becomes weak and hence can be easily cleaved from it.
To Predict: The relative acid strength of the given compounds.