How do you get hydrogen and oxygen gases from H2O?

Answer 1

To separate H2O(liquid) into H2(gas) and O2(gas), you would use a process called electrolysis. This involves passing an electric current through the water, and collecting hydrogen as it forms as bubbles at the cathode (negative terminal), as well as collecting oxygen as bubbles at the anode (positive terminal). You will get half as much oxygen as hydrogen.

For a more detailed description, see the Wikipedia page:

http://en.wikipedia.org/wiki/Electrolysis_of_water you get H and O2 from H2O by using a method called Electrolyzation in which you separate O2 and H and this method is used in advanced submarines to have O2 from water.

Answer 2

Hydrogen and oxygen gases can be obtained from water (H2O) through a process called electrolysis. This involves passing an electric current through water, causing it to split into hydrogen and oxygen gases at the electrodes. Hydrogen gas forms at the cathode (negative electrode) and oxygen gas forms at the anode (positive electrode).

Answer 3

Hydrogen and oxygen can be obtained from water by electrolysis, a kind of decomposition; this process is not synthesis.