It turns dark green and lets of oxegeon decreasing the mass
Oxygen gas is given off when potassium permanganate is broken down. Potassium permanganate decomposes into manganese dioxide, potassium hydroxide, and oxygen gas when heated.
When potassium carbonate is heated, carbon dioxide gas is given off. Potassium carbonate decomposes to form potassium oxide and carbon dioxide.
here is the rection... 2KMnO4 + 3H2SO4 = K2SO4 + 2MnSO4 + 3H2O + 2.5O2 (alkaline) and in other conditions... 6 KMnO4 + 9 H2SO4 → 6 MnSO4 + 3 K2SO4 + 9 H2O + 5 O3 The H2SO4/KMnO4 reaction can also produce the oily Mn2O7, which is unstable and can decompose explosively.
Oxygen gas is evolved when potassium chlorate is heated. The thermal decomposition of potassium chlorate releases oxygen gas, leaving behind potassium chloride as a residue. This reaction is commonly used in oxygen-generating experiments and processes.
When potassium bromate is heated, it decomposes into potassium bromide and oxygen gas. This reaction is a decomposition reaction, where a single compound breaks down into two or more simpler substances.
When potassium manganate is thermally decomposed, it decomposes into potassium manganate(VII) and oxygen gas. The reaction produces a green residue of potassium manganate(VII) and releases oxygen gas as a byproduct.
Oxygen gas is given off when potassium permanganate is broken down. Potassium permanganate decomposes into manganese dioxide, potassium hydroxide, and oxygen gas when heated.
When potassium carbonate is heated, carbon dioxide gas is given off. Potassium carbonate decomposes to form potassium oxide and carbon dioxide.
I'm not entirely sure but I'm pretty positive it turns black, thus releasing oxygen and this can be proved if the test tube containing the potassium manganate VII is connected to another test tube or bowl containig limewater because it will start to bubble and turn cloudy or milky.
here is the rection... 2KMnO4 + 3H2SO4 = K2SO4 + 2MnSO4 + 3H2O + 2.5O2 (alkaline) and in other conditions... 6 KMnO4 + 9 H2SO4 → 6 MnSO4 + 3 K2SO4 + 9 H2O + 5 O3 The H2SO4/KMnO4 reaction can also produce the oily Mn2O7, which is unstable and can decompose explosively.
When Potassium Hydroxide is heated, it gives off water vapor (H2O). When Sodium Hydroxide is heated, it also gives off water vapor (H2O).
Oxygen gas is evolved when potassium chlorate is heated. The thermal decomposition of potassium chlorate releases oxygen gas, leaving behind potassium chloride as a residue. This reaction is commonly used in oxygen-generating experiments and processes.
After potassium iodate (KIO3) is heated, it decomposes to form potassium iodide (KI) and oxygen gas (O2).
When potassium bromate is heated, it decomposes into potassium bromide and oxygen gas. This reaction is a decomposition reaction, where a single compound breaks down into two or more simpler substances.
Ammonia gas (NH3) is given off when ammonia solution is heated.
When potassium nitrate crystals are heated with concentrated sulphuric acid, nitric oxide gas (NO) is evolved. This is a result of the oxidation of nitrate ions in potassium nitrate by the sulphuric acid.
we can know that potassium chlorate is very poisonous.