Practicing Success
The correct order of boiling points of hydrogen halides is A. HCl B. HBr C. HF D. HI Choose the correct answer from the options given below: |
HF < HI < HBr < HCl HF < HCl < HBr < HI HF > HCl > HBr > HI HF > HI > HBr > HCl |
HF > HI > HBr > HCl |
All halogens react with hydrogen to give hydrogen halides but affinity for hydrogen decreases from fluorine to iodine. Hydrogen halides dissolve in water to form hydrohalic acids. 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 in the order: H–F > H–Cl > H–Br > H–I. Increasing Order of Boiling points are: HCl < HBr < HI < HF Reason: B.P. of HF is highest due to Hydrogen bonding and rest order is due to molecular mass. |