Q. 12 B3.7( 7 Votes )
Write a balanced chemical equation for each of the following reactions and also classify them.
A piece of sodium metal is added to absolute ethanol to form sodium ethoxide and hydrogen gas.
The reaction is as follows:
Na + C2H5OH → C2H5ONa + H2
In the above reaction there are seven molecules of hydrogen on product side and six molecules on reactant side. So let us first balance the number of hydrogen.
Na + 2C2H5OH → 2C2H5ONa + H2
Now there are 12 molecules of hydrogen on both the sides. Bu there are two molecules of sodium on product side and only one molecule on reactant side. So the overall balanced reaction can be written as follows:
2Na + 2C2H5OH → 2C2H5ONa + H2
This reaction is a displacement reaction in which sodium displaces hydrogen from ethanol to form sodium ethoxide.
Rate this question :
Which among the following statement(s) is(are) true? Exposure of silver chloride to sunlight for a long duration turns grey due to:
(i) The formation of silver by decomposition of silver chloride
(ii) Sublimation of silver chloride
(iii) Decomposition of chlorine gas from silver chloride
(iv) Oxidation of silver chlorideEvergreen Science
Which of the following are exothermic processes?
(i) Reaction of water with quicklime
(ii) Dilution of an acid
(iii) Evaporation of water
(iv) Sublimation of camphor (crystals)Evergreen Science