Question

If sulfur dioxide and oxygen can be made into sulfur trioxide, what is the reverse reaction? A. SO3 +O2à SO3 B. 2SO2 + O2à 2SO3 C. 2SO3à2SO2+O2. D. SO2+2SO3à 3S +4O2

Answer 1

REVERSE REACTION WILL BE SO2+O2

Answer 2

Answer: The correct answer is Option C.

Explanation:

Reverse reaction is defined as the chemical reaction in which the reactants forming products at first, react together to give back the reactants.

Forward reaction is given by the equation:

$A+B\rightarrow C+D$

Now, the reverse reaction for this will be:

$C+D\rightarrow A+B$

• According to the question:

Sulfur dioxide and oxygen are reacting together to form sulfur trioxide. The forward reaction for this will be:

$2SO_2+O_2\rightarrow 2SO_3$

The reverse reaction for this will be:

$2SO_2\rightarrow 2SO_2+O_2$

Hence, the correct answer is Option C.