Dalton's law and mixtures of gases

37 questions on Dalton's law and mixtures of gases from the Gaseous State: Ideal Gases chapter: 7 NEET level, 15 JEE Main, 15 JEE Advanced. Each one opens with its answer and solution.

• A vessel contains 2 mol of N2 and 3 mol of O2 at a total pressure of 5 atm. The partial pressure of N2 is NEET level
• Dalton's law of partial pressures is strictly applicable to a mixture of NEET level
• Equal masses of CH4 (molar mass 16) and O2 (molar mass 32) are mixed in an empty container at 25 degC. The fraction of the total pressure exerted by O2 is JEE Main level
• Two flasks are connected by a stopcock. Flask A (2.0 L) contains N2 at 1.2 atm and flask B (3.0 L) contains Ar at 0.80 atm, both at the same temperature. When t... JEE Main level
• A gas mixture contains N2 and O2 in the mole ratio 7 : 3 at a total pressure of 800 mm Hg. The partial pressure of O2 in mm Hg (nearest integer) is JEE Main level
• 250 mL of hydrogen is collected over water at 27 degC and a total pressure of 740 mm Hg. The aqueous tension (vapour pressure of water) at 27 degC is 20 mm Hg. ... JEE Main level
• A closed rigid vessel at 400 K contains H2 at 2.0 atm and O2 at 2.0 atm. A spark causes complete reaction of the limiting reagent and the vessel is brought back... JEE Advanced level
• A mixture of He (molar mass 4) and CH4 (molar mass 16) has a total mass of 10.0 g. At a total pressure of 1.0 atm the partial pressure of He is 0.60 atm. The ma... JEE Advanced level
• A vessel contains 1 mol of H2 and 1 mol of He at 300 K. Which of the following are correct for this mixture? JEE Advanced level
• Oxygen is collected over water at 25 degC when the barometric pressure is 760 mm Hg and the aqueous tension is 24 mm Hg. Which statements are correct? JEE Advanced level
• The sum of the mole fractions of all the gases in a mixture is NEET level
• When a gas is collected over water, the pressure of the dry gas is obtained from the total pressure by NEET level
• 3.0 L of N2 at 2.0 atm and 1.0 L of O2 at 4.0 atm are transferred at constant temperature into a 2.0 L evacuated vessel. The total pressure in the vessel is JEE Main level
• Air is approximately 78% N2, 21% O2 and 1% Ar by volume. At a total pressure of 1.0 bar, the partial pressure of O2 is JEE Main level
• 2.0 g of H2 and 8.0 g of O2 are placed in a 10.0 L vessel at 300 K (no reaction). Taking R = 0.0821 L atm K^-1 mol^-1, the total pressure in atm (two decimals) ... JEE Main level
• A gaseous mixture contains 0.50 mol CO2, 1.20 mol N2 and 0.80 mol O2 at a total pressure of 2.0 atm. The partial pressure of CO2 in atm (two decimals) is JEE Main level
• A closed vessel contains He and Ne in the mole ratio 3 : 1 at a total pressure of 4 atm. Which statements are correct? JEE Main level
• A mixture of CO and CO2 has an average molar mass of 36 g mol^-1. The mole fraction of CO2 in the mixture is JEE Advanced level
• A 1.0 L closed vessel at 300 K contains N2 at 0.800 atm together with 0.10 g of liquid water. The vapour pressure of water at 300 K is 0.035 atm. Taking R = 0.0... JEE Advanced level
• A 2.0 L vessel contains 0.10 mol N2 and 0.30 mol H2 at 300 K. Taking R = 0.0821 L atm K^-1 mol^-1, which statements are correct? JEE Advanced level
• A 10 L vessel at 300 K contains H2 at partial pressure 2.0 atm and Cl2 at partial pressure 1.0 atm. The gases react completely to form HCl(g) and the vessel is ... JEE Advanced level
• A vessel contains three gases A, B and C with partial pressures 100, 200 and 300 mm Hg. The mole fraction of B is NEET level
• N2 and H2 are mixed in the mass ratio 14 : 3. The ratio of their partial pressures p_N2 : p_H2 is JEE Main level
• Which of the following is the correct expression for the partial pressure of a component i of an ideal gas mixture at temperature T in volume V? JEE Main level
• A 5.0 L flask contains N2 and O2 at a total pressure of 3.0 atm and 300 K. The total mass of gas is 18.4 g. Taking R = 0.0821 L atm K^-1 mol^-1, the mole fracti... JEE Advanced level
• A gaseous mixture contains CH4 and C2H6 in the mass ratio 4 : 5. Which statements are correct? JEE Advanced level
• 100 mL of a gas is collected over water at 300 K when the total pressure is 760 mm Hg and the aqueous tension is 30 mm Hg. Which statements are correct? JEE Advanced level
• In a gas mixture at constant temperature and volume, the partial pressure of a component is proportional to NEET level
• The total pressure of a mixture of non-reacting gases is 750 mm Hg. If the mole fraction of CO2 is 0.2, its partial pressure is NEET level
• 0.5 mol of He and 1.5 mol of Ne are placed in a vessel at 300 K and the total pressure is 4 atm. If He is removed, keeping T and V constant, the pressure become... JEE Main level
• A 1 L flask contains O2 at 1 atm and a 2 L flask contains N2 at 0.5 atm, both at 300 K. After the flasks are connected, the mole fraction of O2 in the mixture i... JEE Main level
• A 5.0 L vessel at 273 K contains 1.0 g H2, 8.0 g O2 and 7.0 g N2. Taking R = 0.0821 L atm K^-1 mol^-1, the total pressure in atm (two decimals) is JEE Main level
• A vessel contains 0.50 mol H2, 0.25 mol O2 and 0.25 mol N2 at a total pressure of 1200 mm Hg. The partial pressure of H2 in mm Hg (nearest integer) is JEE Main level
• A 4.0 L vessel contains He at 300 K and 2.0 atm. 0.10 mol of N2 is added at the same temperature. Taking R = 0.0821 L atm K^-1 mol^-1, the final total pressure ... JEE Advanced level
• 300 mL of N2 is collected over water at 25 degC and 755 mm Hg. The aqueous tension at 25 degC is 25 mm Hg. The volume of dry N2 at STP (273 K, 760 mm Hg) in mL ... JEE Advanced level
• A closed vessel contains equal masses of H2 (2), He (4) and CH4 (16) at the same temperature. Which statements are correct? JEE Advanced level
• At 300 K, a 2.0 L flask contains CO at 0.50 atm and a 3.0 L flask contains O2 at 1.0 atm. The flasks are connected and the gases react completely by 2CO + O2 ->... JEE Advanced level