How will you show with the help of an experiment that Copper is now reactive than silver?
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Answers
In activity series silver is placed below the copper. hence copper is more reactive than silver. The more reactive element can displace the less reactive element from its solution. take two test tubes in test tube -1 take silver Sulphate solution(white in color) & in test tube-2 take copper Sulphate solution (blue in color). Add copper turnings to test tube -1 and add silver piece to test tube -2 keep the test tubes undisturbed for 15 minutes. After sometime observe the color changes in both test tubes. The color in test tube – 1 changed from white to blue and there is no color change in test tube-2.this indicates in test tube-1 copper displaces silver from its silver Sulphate solution forms copper Sulphate. And in test tube- 2 no displacement reaction takes place.
or in other words simply
Suspend a copper wire in a solution of silver nitrate. Over the course of a few hours the silver nitrate will convert to copper II nitrate, turning the solution blue. Elemental silver will precipitate.
Take copper metal and silver nitrate solution.
Put the copper metal in silver nitrate solution.
The solution is generally colourless but slowly changes to blue.
This is because copper being more reactive than silver displaces silver from its salt solution to form copper nitrate which is blue in colour.