how could i get hydrogen in a close container?

Question

i had tried using the electrolysis method. any other ways? please tell me.

Answer 1

Drop a few strips of zinc or a handful of galvanized nails into hydrochloric acid in a flask. The more concentrated the acid, the faster the reaction and the more hydrogen will be produced per unit of time. Place a one-hole rubber stopper with a rubber tube attached into the neck of the flask. Wait a minute or so for air to clear from the flask. Place the distal end of the rubber tube into the mouth of a water-filled inverted bottle or jar, in a larger container of water, so the hydrogen can bubble up into the bottle. When filled with hydrogen, stopper the bottle underwater while still inverted, then remove the bottle of hydrogen.

Another collection method is to have a short stem protruding from the rubber stopper. Stretch the neck of an ordinary party balloon over the stem, and allow the balloon to inflate with hydrogen. Use balloons designed to hold helium. The rubber is more dense than that of ordinary air ballons, and it won't deflate as fast.

Answer 2

in an o2 free environment immerse a small amount at a time pure metallic sodium or potassium into purified water.
2Na + 2H2O = H2 + 2NaOH + heat
2K + 2H2O = H2 + 2KOH + heat
In an environment of a noble gas or CO2 , the hydrogen will rise to the top. You cannot use glass : the very strong base will react with silicon.. try stainless steel.. this is not for children or novices and can result in serious injury if you are even a little careless..

Answer 3

At high temperatures (700–1100 °C), steam (water vapor) reacts with methane to yield carbon monoxide and H2.

CH4 + H2O → CO + 3 H2

Answer 4

React sodium hydride (NaH) with water. This produces hydrogen gas and and sodium hydroxide.