10th Class Science Metals and Non-metals Question Bank 10th CBSE Science Metals and Non-metals

  • question_answer
      A copper coin is kept immersed in a solution of silver nitrate for some time. What will happen to the coin and the colour of solution?

    Answer:

                      Copper is placed above the silver in the reactivity series which indicates that copper is more reactive than silver. When a copper coin or strip is kept immersed in a solution of silver nitrate (AgNO3), silver from its solution will deposit on copper coin. Copper slowly displaces silver from the AgNO3 solution and the colour of solution changes from colourless to blue due to formation of copper nitrate [Cu(NO3)2]. The copper coin will disappear and silver will precipitate out.


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