What would you use to test a gas to see if it was water vapour?

Answer 1

I would probably test it as a liquid using a pH test to see if it comes up as pH 7 (neutral, which is what pure water should be). To do this, though, try trapping the gas in a jar and with the lid on, put that jar in ice until it all condenses, then pH test the condensation. :)

Answer 2

i think its lime water but am not sure

it might be hydrogen carbonate indicator or cobalt chloride paper or maybe even universal indicator paper .

have a guest you might be right you ever no

Answer 3

You can use a hygrometer to test for water vapor in a gas. A hygrometer measures the humidity or moisture content in the air or gas. Alternatively, you can also use a dew point calculator to determine the temperature at which the gas will reach saturation and condensation will occur.

Answer 4

The use of a dehydrated salt would work..

E.g get some anhydrous copper sulfate (white) if the gas is water it will re hydrate the copper salt and turn it blue

Answer 5

you blow into a glass of lime water and you will see weather or not it has carbon dioxide: a precipitate of CaCO3 is a positive conformation on the presence of carbon dioxide.