How will you prove that Hydrochloric acid contains (i) hydrogen (ii) chlorine? Write equations for the reactions.
How will you prove that Hydrochloric acid contains (i) hydrogen (ii) chlorine? Write equations for the reactions.
We can prove that hydrochloric acid contains both hydrogen and chlorine by the following experiment.
Take a voltameter used for electrolysis of water, fitted with a platinum cathode and a graphite anode. Into the voltameter pour 4 molar HCl and pass direct current.
It is seen that a colourless gas is evolved at the cathode and a greenish gas is evolved at the anode. When a burning splinter is brought near a colourless gas, it bursts into flame thereby proving that it is hydrogen gas. When moist starch iodide paper is held in the greenish-yellow gas, it turns blue-black, thereby proving that the gas is chlorine.
This experiment proves that hydrochloric acid contains both hydrogen and chlorine.
We can prove that hydrochloric acid contains both hydrogen and chlorine by the following experiment.
Take a voltameter used for electrolysis of water, fitted with a platinum cathode and a graphite anode. Into the voltameter pour 4 molar HCl and pass direct current.
It is seen that a colourless gas is evolved at the cathode and a greenish gas is evolved at the anode. When a burning splinter is brought near a colourless gas, it bursts into flame thereby proving that it is hydrogen gas. When moist starch iodide paper is held in the greenish-yellow gas, it turns blue-black, thereby proving that the gas is chlorine.
This experiment proves that hydrochloric acid contains both hydrogen and chlorine.
