Question

What is the action of conc. Sulphur acid on a) Zn
b) Mg
c) Fe
d) Cu
e)H2S

Answer 1

HEY .......❤

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THE REACTION IS

SULPHURIC ACID + ZINC = ZINC SULPHIDE + HYDROGEN GAS.....

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MEANS.......

H2SO4 + ZN = ZNSO4 + H2.......

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THIS IS BECAUSE ZINC IS MORE REACTIVE .....

THIS REACTION IS A DISPLACEMENT REACTION .....

IN THIS THE HYDROGEN GOES INTO AIR WITH THE BUBBLES.....

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Answer 2

1). H2SO4 + Zn --------> ZnSO4 + H2

2) H2SO4 + Fe -------> FeSO4 + H2

3) H2SO4 + Cu ---••••--> CuSo4 + So2 + H2o

4) H2So4 + H2s ----------> 2H2o + SO2 + S

in 1st and 2nd reaction hydrogen gas evolve...and in 3rd and 4th hydrogen sulphate evolve in the form of gas...