Q40 of 60 Page 33

Carbon, Group (14) element in the Periodic Table, is known to form compounds with many elements. Write an example of a compound formed with

(a) chlorine (Group 17 of periodic table)


(b) oxygen (Group 16 of periodic table)

(a) Carbon forms carbon tetrachloride (CCl4) with chlorine. Carbon tetrachloride is used as a solvent for oils and fats. It is also used as a refrigerant.


(b) Carbon forms carbon dioxide (CO2) with oxygen. Solid carbon dioxide (i.e., dry ice) is used in large-scale refrigeration. It is also used in fire extinguishers.


More from this chapter

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38

A gas is evolved when ethanol reacts with sodium. Name the gas evolved and also write the balanced chemical equation of the reaction involved.

 39

Ethene is formed when ethanol at 443 K is heated with excess of concentrated sulphuric acid. What is the role of sulphuric acid in this reaction? Write the balanced chemical equation of this reaction.

 41

In electron dot structure, the valence shell electrons are represented by crosses or dots.

(a) The atomic number of chlorine is 17. Write its electronic configuration?


(b) Draw the electron dot structure of chlorine molecule.

 42

Catenation is the ability of an atom to form bonds with other atoms of the same element. It is exhibited by both carbon and silicon. Compare the ability of catenation of the two elements. Give reasons.