Q. 18 B4.3( 14 Votes )
Which gas is usually
Hydrogen gas is usually liberated when an acid reacts with a metal. To test the presence of this gas, take few pieces of zinc granules and add 5 ml of dilute H2SO4. Shake it and pass the gas produced, into a soap solution. The bubbles of the soap solution get formed. These soap bubbles contain hydrogen gas.
To test the evolved hydrogen gas, a candle is brought near the soap bubbles, the gas burns producing a pop sound confirming the presence of hydrogen gas.
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