- #1
feiyangflash
- 4
- 0
Hi All,
I tried to collected hydrogen gas generated from the reaction between a metal and hydrochloric acid. I put a inverted conical flask in the water, and the generated H2 would push the water out of the flask, and then the H2 was collected. However, I guess there is water vapor mixed together with the H2, and therefore the gas volume I read is actually for the summation of H2 and water vapor, rather than the H2. I could find the equilibrium vapor pressure of water at room temperature. However, I don't know whether the equilibrium between liquid water and water vapor is reached or not. The whole reaction last for 1/2 hour.
Is there a way to figure out how much the pressure contributed by water vapor is?
Thank you!
Fei
I tried to collected hydrogen gas generated from the reaction between a metal and hydrochloric acid. I put a inverted conical flask in the water, and the generated H2 would push the water out of the flask, and then the H2 was collected. However, I guess there is water vapor mixed together with the H2, and therefore the gas volume I read is actually for the summation of H2 and water vapor, rather than the H2. I could find the equilibrium vapor pressure of water at room temperature. However, I don't know whether the equilibrium between liquid water and water vapor is reached or not. The whole reaction last for 1/2 hour.
Is there a way to figure out how much the pressure contributed by water vapor is?
Thank you!
Fei