Q.1 What is the difference between 2O and O2(here 2 is under O)?
Q.2 On what basis is balancing of a chemical equation done?
Q.3 What happens when a strip of zinc is dipped in a copper sulphate solution?
Please tell it fast.. I need it (urgent).
Answers
Answer:
Q1.) 2O is an oxygen atom having 2 molecules where's O2 is expressed when 2 atoms of oxygen are together.
Q2.) The balancing of chemical reaction is done on the basis of "Law of Conservation of Mass."
Q3.) Zn +CuSO4 ---> Cu + ZnSO4
Displacement Reaction takes place.
Hope it helps
Answer:
1. O2 is a molecule consisting of 2 atoms of oxygen. 2O denotes two seperate oxygen atoms. O2 is a molecule and thus it is stable. 2O, whichconsists of 2 different atoms and thus these 2 atoms are ready to combine with any other element like hydrogen.
2. Chemical equation is balanced on the basis of law of conservation of mass ,i.e.number of atoms on the left side (reactants) should be equal to number of atoms on the right side (products)
3. When a zinc strip is dipped into a copper sulphate solution ; Zinc displaces Copper from its Sulphate Solution. 2.) This is a displacement reaction. A displacement reaction is a reaction in which one element displaces another element from its salt solution.
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