Science, asked by suryansh20032001, 9 months ago

this is a question of 10 class

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Answered by zahaansajid

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BaCl2 + CuSO4 -----> BaSO4 + CuCl2

2Cu + O2 -----> 2CuO

2FeSO4 --∆--> Fe2O3 + SO2 + SO3

Fe + CuSO4 -----> FeSO4 + Cu

CaO + H2O -----> Ca(OH)2

BaSO4 is the white precipitate
CuO is the black colour observed
Fe2O3 is the reddish brown solid and the smell of burning sulpher is due to the fumes of SO2 and SO3
Blue coloured CuSO4 becomes pale green coloured FeSO4

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