Question

11.

Consider five different test tubes labelled as (a), (b), (c). (d) and (e) contain aqueous solution of AgNO3, NaOH, Al2(SO.)3, Pb(NO3)2 and Nacl respectively. Zinc granules are added in each test tube and the test tubes are observed for sometime. Which of the following options is true?​

Answer 1

Answer:

Where are the options?

Explanation:

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Answer 2

Zinc is a reactive metal and it reacts with acids to produce hydrogen gas.

Explanation:

A)  Zinc granules react with silver nitrate to form zinc nitrate and silver. The balanced reaction is $Zn + 2AgNO_3 \rightarrow Zn(NO_3)_2 +2Ag$.

B)  The zinc granule reacts with NaOH to form sodium zincate along with hydrogen gas as products. This reaction proves that zinc is an amphoteric metal and is capable of removing the hydrogen both form the base and acid. The reaction is $Zn +2NaOH \rightarrow 2Na_2ZnO_2 + H_2$.

C)  There is no reaction takes place because aluminium is more reactive than zinc and zinc is unable to displace the Al from the aluminium sulphate.

D) The balanced reaction is $ZN + Pb(NO_3)_2 \rightarrow Zn(NO_3)_2 + Pb$.

E) The zinc granule does not react with NaCl because the zinc is less reactive than NaCl and it won't be able to displace the sodium from the salt.