(A) Can We Stir Silver Nitrate Solution With A Copper Spoon? Why Or Why Not? Support You
Answer. (B) Why A Brown Coating Is Formed On The Iron Rod When Iron Rod Is Kept Dipped In
Copper Sulphate Solution For Some Time? What Change Will Be Observed in The Colour Of The
Solution. (C) A Green Coating Develops On The Copper Vessel In The Rainy Season. Why? (CBSE
2015)
Answers
Answer:
a.)no
Explanation:
answer.a. No, we can't stir a silver nitrate solution with a copper spoon since copper is more reactive than silver. It will displace silver from silver nitrate solution and form copper nitrate.
answer.b. When a iron rod is kept dipped in copper sulphate solution a brown coating of copper is formed on the surface of iron. ... It shows that iron is more reactive than copper it replaces copper from CuSO4. CuSO4 is blue in colour and FeSO4 is light green in colour. It is a displacement reaction
answer c Copper reacts with moist CO2,in the air,to form the green coloured-"PATINA". Patina is an outer layer of copper oxide, which appears green or bluish-green in color.
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