In the final chemical equation, nacl and o2 are the products that are formed through the reaction between na2o and cl2. before you can add these intermediate chemical equations, you need to alter them by

Answer : The correct option is, (B) multiplying the equation first by 2.

Explanation :

The balanced final chemical reaction will be,

The two intermediate chemical reaction are give :

(1)

(2)

First multiplying the equation (1) by 2, we get

Now adding both the equations, we get

The final chemical reaction are :

Hence, the correct option is, (B) multiplying the equation first by 2.

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