Question

What role did water vapour play in the Miller-Urey experiment apparatus?

Options

• It was used to sterilise the apparatus before the experiment

• It was a byproduct of the chemical reactions

• It was only used in the condenser to cool the gases

• It was introduced through a tube connected to the chamber along with other gases

Answer 1

A tube carrying water vapour was connected to the chamber and introduced along with methane, ammonia, and hydrogen gases. This water vapour was essential to simulate the water content of the early Earth's atmosphere and participate in the chemical reactions.