List of top Chemistry Questions on Gaseous State asked in TS EAMCET

At \(300\,\mathrm{K}\), the diffusion rate of one mole of an ideal gas is \(0.082\,\mathrm{L\,s^{-1}}\). What is the pressure (in atm) of this gas which can diffuse in \(100\,\mathrm{s}\)? \[ \left(R=0.082\,\mathrm{L\,atm\,mol^{-1}\,K^{-1}}\right) \]

When \(160\,\mathrm{g}\) of methane was burnt in air at STP, \(5\%\) of it remained. At \(273\,\mathrm{K}\) and \(1\,\mathrm{bar}\) pressure, air contains \(20\%\) of \(\mathrm{O_2}\) by volume. What is the approximate volume (in L) of air consumed? \[ \text{(At STP molar volume }=22.71\,\mathrm{L}) \]

A balloon filled with an air sample occupies 3 L volume at 35 °C. On lowering the temperature to T, the volume decreases to 2.5 L. The temperature T is [Assume P constant]