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प्रश्न
Sea is the greatest source of some halogens. Comment.
उत्तर
Sea water contains chlorides, bromides, and iodides of Na, K, Mg, and Ca. However, it primarily contains NaCl. The deposits of dried up sea beds contain sodium chloride and carnallite, KCl.MgCl2.6H2O. Marine life also contains iodine in their systems. For example, sea weeds contain upto 0.5% iodine as sodium iodide. Thus, sea is the greatest source of halogens.
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संबंधित प्रश्न
Give reasons for the following:
Electron gain enthalpies of halogens are largely negative.
Out of chlorobenzene and benzyl chloride, which one gets easily hydrolysed by aqueous NaOH and why?
Write the structure of the product when chlorobenzene is treated with methyl chloride in the presence of sodium metal and dry ether.
Write the structure of the alkene formed by dehydrohalogenation of 1-Bromo-1methylcyclohexane with alcoholic KOH.
Write balanced chemical equations involved in the following reactions:
Chlorine gas reacts with cold and dilute NaOH
For electron affinity of halogens which of the following is correct?
Which of the following statements are correct?
(i) Among halogens, radius ratio between iodine and fluorine is maximum.
(ii) Leaving F – F bond, all halogens have weaker X – X bond than X – X' bond in interhalogens.
(iii) Among interhalogen compounds maximum number of atoms are present in iodine fluoride.
(iv) Interhalogen compounds are more reactive than halogen compounds.
Which of the following bond is the strongest?
The halogen which is most easily reduced is
The correct order of bond dissociation enthalpy of halogens is ______.
