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प्रश्न
What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?
What happens when iron nails are put into copper sulphate solution?
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उत्तर १
`An iron nail displaces copper from a copper sulphate solution to form a ferrous sulphate solution, due to which the blue colour of the copper sulphate solution fades. Also, copper is deposited on the iron nail, which turns it reddish-brown in colour.
उत्तर २
When iron nails are put into copper sulphate solution, the blue colour of copper sulphate fades gradually to green due to the formation of ferrous sulphate and the reddish-brown copper metal is deposited on the iron nails.
CuSO4(aq) + Fe(s) → FeSO4(aq) + Cu(s)
संबंधित प्रश्न
Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium
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Write one reaction in which aluminium oxide behaves as a basic oxide and another in which it behaves as an acidic oxide.
Name one metal which displaces silver from silver nitrate solution and one which does not.
One of the following is not a neutral oxide. This is:
(a) CO
(b) H2O
(c) N2O
(d) Na2O
An element is soft and can be cut with a knife. If is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be:
(a) Mg
(b) S
(c) P
(d) Na
If A, B, C, D, E, F, G, H, I, J and K represent metals in the decreasing order of their reactivity, which one of them is most likely to occur in a free state in nature?
A zinc plate was kept in a glass container having CuSO4 solution. On examining it was found that the blue colour of the solution is getting lighter and lighter. After a few days, when the zinc plate was taken out of the solution, a number of small holes were noticed in it. State the reason and give chemical equation of the reaction involved.
Choose the correct alternative and rewrite the following:
Reaction of iron nails whith copper sulphate solution is an example of _____________________
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Which one among the following is an acidic oxide?
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Tungsten wire is used in electric bulbs.
