Question

The following chemical equation is not balanced: I2 + Na2S2O3 NaI + Na2S4O6 When this chemical equation is correctly balanced, what is the coefficient of the NaI molecule?

Answer 1

this is the balanced equation: I₂ + 2Na₂S₂O₃ ---> 2NaI + Na₂S₄O₆

so the coefficient is 2

Answer 2

Answer: The coefficient of $NaI$ is 2.

Explanation:

According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The balanced chemical equation for the given reaction is :

$I_2+2Na_2S_2O_3\rightarrow 2NaI+Na_2S_4O_6$

Thus the coefficient of $NaI$ is 2.