Question

The chemical equation below shows the reaction of sodium (Na) and chlorine (Cl) to form sodium chloride (NaCl).

2Na + Cl2 → 2NaCl

In this equation, which of the following is a reactant?
I. sodium
II. chlorine
III. sodium chloride
A.
I only
B.
I, II, and III
C.
I and II only
D.
III only

Answer 1

Reactants are the substances needed to begin the reaction, and is generally on the left side of the equation.

In this case, you can see that sodium and chlorine are added together to start the reaction.

Therefore the answer would be C I and II only

Hope this helped! :D

Answer 2

Answer : The correct option is, (C) I and II only

Explanation :

Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on the reactant side must be equal to the product side.

The given balanced chemical reaction is,

`2Na+Cl_2\rightarrow 2NaCl`

In the balanced chemical reaction, the species present on the left side of the reaction is known as reactant and the species present on the right side of the reaction is known as product.

From this we conclude that, the sodium,
`Na` and chlorine,
`Cl_2` are the reactants and sodium chloride,
`NaCl` is the product.

Hence, the correct option is, (C) I and II only