Why is the amount of gas collected in one of the test tubes in the image double the amount collected in the other? Name this gas.
(N/A) Water $(H_2O)$ consists of two parts hydrogen and one part oxygen by volume.
During the electrolysis of water,the chemical reaction is: $2H_2O(l) \rightarrow 2H_2(g) + O_2(g)$.
This reaction shows that hydrogen gas and oxygen gas are produced in a $2:1$ ratio.
Since hydrogen gas is collected at the cathode and oxygen gas is collected at the anode,the volume of hydrogen collected is double the volume of oxygen collected.
The gas collected in double the amount is hydrogen.
During the electrolysis of water,the chemical reaction is: $2H_2O(l) \rightarrow 2H_2(g) + O_2(g)$.
This reaction shows that hydrogen gas and oxygen gas are produced in a $2:1$ ratio.
Since hydrogen gas is collected at the cathode and oxygen gas is collected at the anode,the volume of hydrogen collected is double the volume of oxygen collected.
The gas collected in double the amount is hydrogen.
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