Answer :

Zn + HCl ZnCl2 + H2

Balanced equation: Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g)


Explanation:


Step 1: Write the given unbalanced equation


Zn + HCl ZnCl2 + H2


Step 2: Compare the number of atoms of reactants with the number of atoms of products.



Step 3: Now, first we consider the element having uSnequal no. of atoms on both sides. Thus, first let us consider hydrogen atom. If we multiply 2 in the reactant (in HCl), we will get the equal number of atoms as in product (in H2)



Step 4: Write the resulting equation:


Zn + 2HCl ZnCl2 + H2


Step 5: Now check whether the equation is balanced or not by comparing the atoms



We find that the equation is balanced now.


Step 6: Write down the final balanced equation:


Zn + 2HCl ZnCl2 + H2


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