Question

1. The colour of Silver Nitrate solution changes when a copper rod is dipped in it. Explain

this with the help of chemical reaction involved.​

Answer 1

Answer:

The silver nitrate solution changes colour from whitish - colourless solution to a blue coloured solution.

This happens because copper displaces silver in the solution to form copper nitrate.

Explanation:

Copper displaces silver in the solution because copper is more reactive than silver.

This reaction is known as a single displacement reaction.

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The equation of the reaction of the copper metal and the silver nitrate is as follows:

Cu + 2AgNO₃ ---> Cu(NO₃)₂ + 2Ag

The blue colour of the solution is because of the copper ions in the formed copper nitrate (copper ions are blue in colour in a solution)

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Note: A more reactive metal will displace a metal that is less reactive in a solution.

Attached is the reactivity series of a few metals that you can use to predict the outcome of a reaction.

Answer 2

Answer:

Explanation: the color of silver nitrate changes when a copper rod is filled in it because the copper will displace the silver from the silver nitrate solution due to its reactivity being higher than silver and it forms copper nitrate.

Reaction:2AgNo3+Cu➡️Cu(No3)2+2Ag

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