Question

Question #fa274

Answer 1

`C_"12"H_"22"O_"11" + 12O_"2" rarr 12CO_"2" + 11H_"2"O`

Explanation:

If you heat sugar at low temperature i.e., 100 degrees then the chemical formula remains unchanged, but if the temperature is too high the sugar will be oxidized by oxygen in the atmosphere to carbon dioxide and water

Answer 2

The balanced equation is `"C"_12"H"_22"O"_11"(s)" → "12C(s)" + "11H"_2"O(g)"`.

Explanation:

When sugar is strongly heated, it doesn't burn.

Instead, it chars.

When the temperature reaches 186 °C, the sugar melts into a syrup.

Continued heating turns the colour of the melted sugar to yellow, then brown, and finally to the black of carbon.

These changes occur because the sugar is gradually being dehydrated (losing water).

When all the water has gone, all that is left is carbon.

The balanced equation is `"C"_12"H"_22"O"_11"(s)" → "12C(s)" + "11H"_2"O(g)"`.

Here's a video that shows the process in action.