Question

Paritosh was assigned a holiday assignment to collect the samples of corroded iron, copper and silver articles during summer vacations. He managed to collect those different samples having coloured compounds. What are the different colours of the compounds? Write formulae of the compounds. What are the values associated with Paritosh?

Answer 1

1. COPPER - Cu + O2 + H2O + CO2 --------- CuCO3.Cu(OH)2
GREEN (Basic copper carbonate )
2. IRON - 2Fe 3/2O2 + xH2O → Fe2O3.xH2O BROWN ( Rust )
3. SILVER - Ag + H2S --------- Ag2S + H2 BLACK (Silver sulphide )