What happens to gas collected in the inverted funnel?

When gas is collected in an inverted funnel, it accumulates at the top of the funnel due to its lower density compared to the surrounding liquid (usually water). The gas cannot escape because of the water blocking its path, creating a seal that allows for the collection of gas without contamination. As more gas is produced, it pushes against the liquid, potentially displacing it or causing bubbles to rise. This setup is commonly used in experiments to capture gases released during chemical reactions.