Question

write the required material to show that
hydrogen gas is evolved when metals react with acids. Exaplain the experimental procedure​

Answer 1

Answer:

aim: to prove that metals liberate hydrogen gas on reaction with acids

materials required: acid, metal, matchstick

procedure:

1. add a metal in an acid and wait
2. after some time gas is liberated with formation of a salt
3. put a burning candle or a match stick on it

observation: you will hear a pop sound which indicates presence of hydrogen

also a salt is formed

conclusion: according to the general formula of an acid reacting with a metal ;

acid + metal --->salt + hydrogen gas