Question

Balance the chemical equation A) Na + Cl2 ---> NaCl B) 2Na + Cl2 ---> NaCl C) 2Na + Cl2 ---> 2NaCl D) 2Na + 2Cl2 ----> 2NaCl

Answer 1

The correct balanced chemical equation for sodium chloride is 2Na + Cl2 —> 2NaCl

Answer 2

Answer:

$2Na+Cl_{2}\rightarrow 2NaCl$

C option is correct.

Explanation:

Given the chemical equations

(A). $Na+Cl_{2}\rightarrow NaCl$, Not balanced

(B). $2Na+Cl_{2}\rightarrow NaCl$, Not balanced

(C). $2Na+Cl_{2}\rightarrow 2NaCl$,  Balanced

(D). $2Na+2Cl_{2}\rightarrow 2NaCl$,Not balanced

Using law of conservation of mass

The mass can neither be created nor be destroyed but it can only be transformed from one form to another.

It can also be stated that total number of individual atoms on the reactant side must be equal to the total number of individual atoms on product side.

Therefore, The balanced equation is

$2Na+Cl_{2}\rightarrow 2NaCl$

Because the number of Na atoms and Cl atoms are equal at reactant and product side.