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Types of chemical reactions-2

Cite an examp...

Question

Cite an example with chemical equation where a chemical change is associated with change in color.

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Solution

When a strip of zinc metal is placed in blue copper sulphate, then zinc sulphate solution and copper are obtained. The blue color of solution fades with time.

$C u S O_{4} (a q) + Z n (s) \to Z n S O_{4} (a q) + C u (s)$

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Similar questions

Q. (a) What is meant by chemical reaction? Explain with the help of an example.
(b) Give one example each of a chemical reaction characterised by:
(i) evolution of a gas
(ii) change in colour
(iii) formation of a precipitate
(iv) change in temperature
(v) change in state.

Q. With the help of an example, explain how physical change is different from a chemical change.

Q. Q). State one example each characterized by the following along with the chemical equation :
(a) Change in state
(b) Evolution of gas
(c) Change in temperature.

Q. Give an example of each of the following chemical changes:

(e) A reaction where colour change is noticed

Define chemical change with an example.

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