176k views
3 votes
Less oxygen lends to a weaker yellow flame. The more oxygenated blue flame is both hotter and more controlled than the oxygen-deprived flame. true or false

1 Answer

2 votes

Final answer:

The statement about flame color and temperature is true, with a blue flame being hotter due to more oxygen which leads to a more complete combustion process. This concept is applicable across various scientific fields, from chemistry lab equipment to astrophysics and the development of clean energy technologies like FCVs.

Step-by-step explanation:

The statement given is true: a less oxygenated flame tends to be yellowish and cooler, while a flame with more oxygen is blue and hotter. In various applications, such as Bunsen burners in a chemistry lab, the blue flame indicates a more complete combustion reaction due to adequate oxygen supply, leading to a higher temperature and a more efficient and controlled burn. This is contrasted by the yellow flame of a candle, which has limited access to oxygen, resulting in incomplete combustion and a cooler flame temperature.

When comparing flames on a stove, the blue flame is definitely hotter than the red flame. This is because the blue flame indicates a higher level of oxygen in the combustion process, thereby signifying a higher temperature. The color of flames is also used as an indicator of temperature in astrophysics, where a blue star is typically much hotter than a red star.

The principles of combustion and the role of oxygen in generating heat are also relevant in fuel-efficient transportation technologies. For example, fuel-cell vehicles (FCV), which use hydrogen, a highly flammable gas, depend on the presence of oxygen to facilitate combustion and generate power without the pollutants associated with gasoline combustion.

User RubberDuck
by
8.1k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.