Nitrogen dioxide is a gas that can be generated by a mission from vehicles and factories. It can also be generated by natural sources, such as forest, fires, lightning and microbial active and soil the equation for producing nitrogen dioxide is shown below which of these provide evidence that a chemical reaction occurs
The equation for producing nitrogen dioxide is:
2NO + O2 → 2NO2
Evidence that a chemical reaction occurs includes:
- Change in color: Nitrogen dioxide is reddish-brown in color, so the color change from colorless nitrogen monoxide to reddish-brown nitrogen dioxide indicates a chemical reaction.
- Formation of a gas: The formation of nitrogen dioxide gas indicates a chemical reaction is taking place.
- Temperature change: If the reaction is exothermic, there might be a noticeable increase in temperature.
- Formation of a precipitate: If a solid is formed in the reaction, it indicates a chemical reaction has occurred.