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Question
When a strip of red-brown metal X is placed in a colourless salt solution YNO3 then metal Y is set free and a blue coloured salt solution X(NO3)2 is formed. The liberated metal Y forms a shining white deposit on the strip of metal Х.
- What do you think metal X is?
- Name the salt YNO3.
- What could be metal Y?
- Name the salt X(NO3)2.
- What type of reaction takes place between metal X and salt solution YNO3?
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Solution
- Metal X is copper (Cu). Copper is a well-known red-brown metal that dissolves to form a distinctive blue Cu(NO3)2 solution.
- Silver Nitrate (AgNO3)
- Metal Y is silver (Ag). Silver forms a shining white metallic deposit on the copper strip.
- Copper nitrate (Cu(NO3)2)
- A single displacement reaction takes place between metal X and salt solution YNO3.
\[\ce{Cu + 2AgNO3 -> Cu(NO3)2 + 2Ag}\]
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