7.2 Magnesium burns when we bring a magnesium ribbon close to a flame, but potassium burns spontaneously in air. Do they have the same ignition temperatures? Justify your answer.
Answers
Answer:
The ignition temperatures of mg and k are not the same, but the temperature difference between them is about 100 - 150°K.
Explanation:
Ignition temperature
The ignition temperature of a substance is the minimum temperature that is required to start or cause combustion. The ignition temperature is also called the ignition point. The temperature at which any substance ignites and begins to burn.
The autoignition temperature of magnesium is about 744 K (473 °C, 883 °F). Magnesium burns at very high temperatures, making it a useful tool for lighting emergency fires during outdoor recreation. For
For potassium, the auto-ignition temperature is in the range of 500-650° K, with higher temperatures for smaller pools and lower oxygen concentrations.
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Answer:
The ignition temperatures of mg and k are not the same, but the temperature difference between them is about 100 - 150°K.
Explanation:
The ignition temperature of a substance is the minimum temperature that is required to start or cause combustion. The ignition temperature is also called the ignition point