Nothing, the reactants and products all are colourless.
Sulfur dioxide is produced in a petrol engine when the fuel being burned contains sulfur impurities. As the fuel combusts, sulfur in the fuel reacts with oxygen in the air to form sulfur dioxide, which is then emitted as a pollutant in the exhaust gases of the engine.
Rust.
The mass of heavy water produced when 7,00grams of oxygen reacts with excess D2 is 7,875 g.
iron oxide or dioxide is form or its commonly known as rust
When a halocarbon reacts with a base, the products are an alcohol and salt.
A lithium amalgam is formed.
Ozone is the form of oxygen that is produced when nitrogen dioxide reacts with sunlight and oxygen molecules. This reaction occurs in the upper atmosphere and helps protect the Earth from harmful ultraviolet radiation.
Calcium oxide (CaO) is produced when calcium reacts with oxygen. This compound is also known as quicklime and is commonly used in various industrial processes and applications.
When ethanol reacts with oxygen, carbon dioxide and water are produced. This reaction typically occurs during combustion, such as burning ethanol as fuel.
Burning petrol is a classic combustion reaction. Petrol is mostly octane, which is a hydrocarbon, C8H18. When it burns, it reacts (explosively!) with oxygen in the air to produce carbon dioxide and water vapor. These are two very common products of most combustion reactions. The water vapor is harmless, but the carbon dioxide is a greenhouse gas, an excess of which is harmful to the environment.
When a halocarbon reacts with a base, the products produced are a salt and an alcohol. The base will deprotonate the hydrogen attached to the carbon atom that is bonded to the halogen, resulting in the formation of the salt. The halogen atom is replaced by a hydroxyl group, leading to the formation of an alcohol.