Question

8. Consider Figure 1. If the height of the mercury column in the leveling bulb is 10 mm greater than that in the gas buret and atmospheric pressure is 670 mm, what is the pressure on the gas trapped in the buret? 9. Consider Figure 1. If the level of the mercury in the leveling bulb is lowered, what happens to the volume of the gas in the gas buret? 10. Show that Boyle's law, Charles's law, and Avogadro's law can be derived from the ideal gas law, 11. Methane burns in oxygen to produce CO, and H,O. CH,(8)+20,() - 2H2O(l) + CO2(g) If 0.50 L of gaseous CH is burned at STP, what volume of O, is required for complete combustion? What volume of CO2 is produced? 12. Calculate the density of N, at STP using (a) the ideal gas law and (b) the molar volume and molar mass of Ny. How do the densities compare?

Answer 1

By Given If the height of the Mercury Column in the leveling bulb is 10 mm greater than the gas buret and atmospheric pressure is 610 mm. The pressure on the gas trapped in the buoret = Gauge pressure - 670 +10 = 680 mm 9. If the level of the Mercury in the leveling bulb is lowered. As per Boyle's Law. In the level of mercury in the levelying bulb is lowered, as per the Law, The volume of a fixed amount of gas will decrease . at a Constant temperature of Pressure increases

10) Ideal Gas Law Equation : [Pr. ART Where Pz pressure Vz volume no no. of moles Rigas Constant T= Temperature in K no. of moles and Temperature are fixed. → Boyle's Law : Pvz Constant Constant Piv = PavaPVR Tz Constant pah Pressure is inversly proportional to pressure for a given mass of given gas at constant temparaturse

- Charles Law: PuenRT vat] - (on stan+ Ti ve Y P2 Constant Volume is directly temparature" --- Constant- proportional to absolute - Avągadoo's law : PvznRT, at constant Temperature and pressute. Va volume na noimber of moles. Volume is directly proportional to no. of moles at Constant pressuse and temperature 11 Methane buons in oxygen to produce Coa and Hao +4 (8) +20,(3) -> 2H30 (1) + Co, ()

If 0.50L of gaseous Ctiq is burned at STP, According to balance Equation, 1 volume CHiq required a volume 2 Ca 95 Sequired for combustion of 0.5L CH4 = 0. 5X QL 12) - = VOL I volume CHA produced = 1 Volume Coq Coa produced by a.si Chuo 0.5L. Calculate the density of Ng at STP. Using as Ideal gas Law b) Molar volume and Molar Mass Density of the at STP using Ideal gas Pre RRT Pro MRT (nam) a RT so per M2 (N2) = 28 R 20.0821 T2873

1x28 0.0821x273 22.4133 P. 1. 249 goams Live By using Ideal gas equation, 1 Mole of gas at STP Occupy - 22.4 Litae PMolar Mass by volume as aтams 28.4 Litre = 1.25 gram.