Advertisements
Advertisements
प्रश्न
Explain why \[\ce{HCl}\] is a gas and \[\ce{HF}\] is a liquid.
Advertisements
उत्तर
Due to greater electronegativity of \[\ce{F}\] over \[\ce{Cl, F}\] forms stronger \[\ce{H}\] – bonds as compared to \[\ce{Cl}\]. As a result, more energy is needed to break the \[\ce{H}\] – bonds in \[\ce{HF}\] than in \[\ce{HCl}\] and hence the b.p. of \[\ce{HF}\] is higher than that of \[\ce{HCl}\]. Consequently, \[\ce{H - F}\] is liquid while \[\ce{HCl}\] is a gas at room temperature.
APPEARS IN
संबंधित प्रश्न
Among NH3, H2O and HF, which would you expect to have highest magnitude of hydrogen bonding and why?
Describe the usefulness of water in biosphere and biological systems.
What properties of water make it useful as a solvent? What types of compound can it (i) dissolve, and (ii) hydrolyse?
Why is it said that-
Water is a universal solvent.
Why is it said that-
There is no alternative to water for cleaning purposes.
Sea water is a bad conductor of electricity.
Why should a glass bottle completely filled with water never be kept in a freezer?
Give reasons: Lakes freeze from top towards bottom.
Why does water show high boiling point as compared to hydrogen sulphide? Give reasons for your answer.
How will you account for 104.5° bond angle in water?
Write two reactions to explain amphoteric nature of water.
The boiling point of water increases with ______ in pressure.
The freezing point of water ______ with an increase in pressure.
______ has the highest latent heat of fusion.
What is the taste of distilled water & boiled water?
What are the physical properties of pure water?
Which of the following ion is responsible for the temporary hardness of water?
