What will happen with a glowing splinter when it touches a potassium chlorate solution being heated?

Question

Did the supply of gas evolve greatest at this place?

Answer 1

It's actually a "splint', not a "splinter".

When it actually touches the solution (which is water) it will stop glowing and go out with a sizzle.  

What gas?  Heating a solution of KClO3 (dissolved in water) will make a hot solution, but it won't cause the chlorate ion to decompose to produce oxygen gas, if that's what  you're thinking.

In order to make O2 from potassium chlorate you must heat the solid salt in the presence of MnO2 (which is a catalyst) over a burner.

2KClO3(s)  ---MnO2, heat---> 2KCl(s) + 3O2(g)

It requires a much higher temperature to decompose the chlorate, than the approximately 100 degrees C you would get by boiling the solution.

Answer 2

I would say so. Potassium Chlorate produces oxygen when it comes in contact with an ignition source.

Answer 3

Heating KCLO3 leads to oxygen production.  Oxygen will cause the glowing splinter to glow brighter.

(Wikipedia - Potassium Chlorate)

Potassium chlorate is often used in high school and college laboratories to generate oxygen gas; it is a far cheaper source than a pressurized or cryogenic oxygen tank. Potassium chlorate will readily decompose if heated in contact with a catalyst, typically manganese (IV) dioxide (MnO2). Thus, it may be simply placed in a test tube and heated over a burner. If the test tube is equipped with a one-holed stopper and hose, warm oxygen can be drawn off. The reaction is as follows:

2KClO3(s) + heat → 3O2(g) + 2KCl(s)