Which gas is commonly released during volcanic eruptions?

Carbon dioxide is commonly released during volcanic eruptions as it is a natural byproduct of volcanic activity. When magma rises to the surface, the pressure decreases, allowing gases dissolved in the magma, including carbon dioxide, to escape into the atmosphere. This release can occur in significant quantities during an eruption, where carbon dioxide can be emitted along with ash and other volcanic gases.

In addition to carbon dioxide, volcanic eruptions can also release other gases such as water vapor, sulfur dioxide, and hydrogen sulfide, but carbon dioxide is particularly abundant and is a significant component of volcanic gas emissions, impacting both the environment and the climate.

Oxygen, while essential for life, is not a significant product of volcanic eruptions. Nitrogen is a major component of the Earth's atmosphere, but it is inert and does not play a role in volcanic emissions. Hydrogen, although it can be produced in certain volcanic processes, is not commonly associated with significant eruptions. Thus, carbon dioxide stands out as the primary gas regularly released during these geological events.