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Q . WHICH OF THE FOLLOWING IS MOST VOLATILE AND WHY?- HF HCl HI HBr

Q . WHICH OF THE FOLLOWING IS MOST VOLATILE AND WHY?-
  1. HF
  2. HCl
  3. HI
  4. HBr
 

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1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
8 years ago
Among the following compound the most volatile is HCl.The volatility of compound id its property to have high vapour pressure at ordinary temperature.
The order is HCl<HBr<HI<HF
HF due to hydrogen bonding is least volatile.As the molecular weight increases the intermolecular force increses due to vander waal force of attraction.Thus HI is liquid and Hcl is a gas.But due to hydrogen bonding in HF it is least volatile

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