Question

Consider the following intermediate chemical equations.

1. 2H2(g) + O2(g) → 2H2O(1)
2. H2(g) + F2(g) → 2HF(g)

In the final chemical equation, HF and O2 are the products that are formed through the reaction between H2O and F2. Before you can add these intermediate chemical equations, you need to alter them by:

A. Multiplying the O second equation by 2 and reversing the first equation.
B. Multiplying the first equation by 2 and reversing it.
C. Multiplying the first equation by (1/2) and reversing the second equation.
D. Multiplying the second equation by 2 and reversing it.

Answer 1

To alter the intermediate chemical equations, we need to multiply the O in the second equation by 2 and reverse the first equation.

Step-by-step explanation:

Before adding the intermediate chemical equations, we need to alter them by multiplying the O in the second equation by 2 and reversing the first equation. So, the correct option is A. Multiplying the O second equation by 2 and reversing the first equation.