The evolved gas is carbon dioxide (CO2).
red brown gas
Oxygen
The gas evolved is carbon dioxide. The test is that it turns lime water milky.
In both reactions hydrogen gas is released but heat evolved in the sodium reaction is bigger.
The evolved gas is carbon dioxide (CO2).
Chlorine Gas is evolved at the anode.
red brown gas
Carbon dioxide gas, CO2(gas)
Oxygen
Hydrogen cyanide (HCN) is most likely the gas evolved.
Hydrogen gas, H2
The gas evolved is carbon dioxide. The test is that it turns lime water milky.
SO2
carbondioxide
If the acid is hydrochloric acid, then the gas is hydrogen.
Marsh gas is impure methane naturally evolved from some wetlands.