When copper powder is heated in air, it reacts with oxygen to form copper(II) oxide.
Product: Copper(II) oxide (CuO)
Colour: Black
Chemical equation:
\[2\text{Cu} + \text{O}_2 \rightarrow 2\text{CuO}\]
For a reaction, \[ {N}_2{O}_5(g) \rightarrow 2{NO}_2(g) + \frac{1}{2} {O}_2(g) \] in a constant volume container, no products were present initially. The final pressure of the system when 50% of the reaction gets completed is:
In Carius method for estimation of halogens, 180 mg of an organic compound produced 143.5 mg of AgCl. The percentage composition of chlorine in the compound is ___________%. [Given: Molar mass in g mol\(^{-1}\) of Ag = 108, Cl = 35.5]