Write an activity to show the evolution of hydrogen gas and it\'s iden

1.	Write an activity to show the evolution of hydrogen gas and it\'s identification.
Answer» Aim : To show the reaction of acids with metals.Required Materials : 1. Test tube 2. Delivery tube 3. Glass trough 4. candle 5. Soap water 6. Dil. HCl 7. Zinc granules.Procedure :\tSet the apparatus as shown in figure.\tTake about 10 ml of dilute HCl in a test tube and add a few zinc granules to it.\tWe will observe the formation of gas bubbles on the surface of zinc granules.\tPass the gas being evolved through the soap water.\tGas filled bubbles are formed in the soap solution which rise into the air.\tBring a burning candle near the gas filled bubbles.\tThe gas present in a soap bubble burns with a ‘pop’ sound.\tResult:\tOnly ‘hydrogen’ gas burns making a ‘pop’ sound.\tSo we will notice that gas evolved is\xa0{ H }_{ 2 }.\t\tAdditional Experiment:\tRepeat the above experiment with\xa0H_{2}SO_{4}\xa0and\xa0HN{{O}_{3}}.\tWe observe the same observation of the HCl experiment.Conclusion : From the above activities we can conclude that when acid reacts with metal, H2 gas is evolved. Hydrogen gas is liberated when an acid reacts with a metal. For example, when zinc metal reacts with dil. hydrogen is evolved and salt zinc chloride is formed as: It can be tested by bringing a burning candle near the gas. The candle continues burning with a pop sound

Write an activity to show the evolution of hydrogen gas and it\'s identification.