Oxidation/reduction (redox) reactions like this: 2h2(g) + o2(g) ⇒ 2h2o(l) will occur spontaneously. to make the reaction proceed in the reverse direction, you must put energy (electricity) into reaction. this is called

The process is called electrolysis.

Option (1) Br– is the catalyst, and the reaction follows a faster pathway with Br– than without

Explanation:

Let us consider the equation below:

Step 1:

H2O2(aq) + Br–(aq) → H2O(l) + BrO–(aq)

Step 2:

BrO–(aq) + H2O2(aq) → H2O(l) + O2(g) + Br–(aq)

From the above equation, we can see that Br– is unchanged.

This implies that Br– is the catalyst as catalyst does not take part in a chemical reaction but they create an alternate pathway to lower the activation energy in order for the reaction to proceed at a much faster rate to arrive at the products.