Advertisements
Advertisements
Question
Account for the following :
Acidic character increases from HF to HI.
Solution
The acidic strength of the hydrohalic acids increases from HF to HI because the stability of the acids decreases from HF to HI on account of decrease in bond dissociation enthalpy of H−X bond from HF to HI.
APPEARS IN
RELATED QUESTIONS
Draw structure of Chlorine pentafluoride
Account for the following: Fluorine does not exhibit positive oxidation state.
Compare the oxidizing action of F2 and Cl2 by considering parameters such as bond dissociation enthalpy, electron gain enthalpy and hydration enthalpy.
Give two examples to show the anomalous behaviour of fluorine.
With what neutral molecule is ClO− isoelectronic? Is that molecule a Lewis base?
Arrange the following in the order of property indicated for each set:
HF, HCl, HBr, HI - increasing acid strength.
Complete chemical reactions are:Cl2 + H2O →
Tincture of iodine is ____________.
Which of the following pairs of ions are isoelectronic and isostructural?
Which of the following statements are true?
(i) Only type of interactions between particles of noble gases are due to weak dispersion forces.
(ii) Ionisation enthalpy of molecular oxygen is very close to that of xenon.
(iii) Hydrolysis of XeF6 is a redox reaction.
(iv) Xenon fluorides are not reactive.
