Answer:
This question is incomplete
Step-by-step explanation:
This question is incomplete because of the absence of the video. However, the addition of sulphuric acid (H₂SO₄) to sugar produces what is known as sugar charcoal through the process of dehydration of the sugar. The process described below should be similar to what is in the video as the process is the same and provides the same result.
When the acid is added, there is a change in the colour of the sugar from white to brown (evidence of initial reaction) and then subsequently black (further change). As the reaction continues, there is an observable increase in size of the sugar (further change and how we know reaction is occurring).