Question

arrange the hydrides of group 17 in increasing order of their acidic strength

Answer 1

Acidic Strength. All .the hydrogen halides act as acids in their aqueous solutions. The acidic strength varies in the order

HF < HCl < HBr < HI

Reason. All the halogen acids ionise to give H+ ion and halide ion, x-.

Answer 2

Answer:

HF  HBr > HCl > HF. This is due to the fact the scale of halogen increases, HX bond will become weaker and for this reason breaks effortlessly to cut up off a proton

Explanation:

HF <HCl < HBr < HI

The acidic strength of these acids varies in the order: HF < HCl < HBr < HI.

The stability of these halides decreases down the group due to decrease in bond (H–X) dissociation enthalpy.

Acid strength depends on strength of H−X bond, weaker the bond easily to give H+

Since bond dissociation enthalpy dcreases from H−F to H−I as the size of atom increases from F to I

Hence, the correct increasing order of acid strength is:HF<HCI<HBr<HI.

The acidic strength of halogen decreases from Hl > HBr > HCl > HF. This is because the size of halogen increases, HX bond becomes weaker and hence breaks easily to split off a proton.  

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