what happens when a burning matchstick is brouth near the mouth of the test tube in which a metal reacted with sulphuric acid ??????

When a matchstick is brought near the mouth of the test tube in which a metal has reacted with sulphuric acid, the matchstick produces a pop-sound nd stops burning. this is due to evolution of hydrogen gas after the reaction.

METAL +  ACID ---------> SALT + HYDROGEN GAS

eg.  Zn + H2SO4 ----------> ZnSO4 + H2

 

THE POP SOIND MADE IS DUE TO THE EVOLUTION OF HYDROGEN GAS, THEREBY, BURNING OUT THE FLAME.

 

 

 

HOPE IT HELPS!

  • 6
What do you observe when you add a piece of aluminium to a freshly prepared solution of sodium hydroxide?
  • 0
What are you looking for?