when copper is exposed to air ,what reaction takes place
The following reaction occurs when copper is exposed to air for a significant amount of time.
2Cu + H2O + CO2 + O2 → Cu(OH)2 + CuCO3
What happens when a copper vessel is exposed to moist air for a long time ?
What type of chemical reactions take place when :
(a) a magnesium wire is burnt in air ?
(b) lime-stone is heated ?
(c) silver bromide is exposed to sunlight ?
(d) electricity is passed through water ?
(e) ammonia and hydrogen chloride are mixed ?
Identify the colour of deposit formed on the surface of copper when it is exposed to moist air.
Silver chloride turns black when it gets exposed to sunlight. Select the chemical reaction taking place resulting in this change.