GasesPressure–Temperature Relationship71Choose the best answerA gas occupies 10 L at 273 K and 1 atm. Which new condition will keep its volume unchanged?A273 K and 2 atmB546 K and 2 atmC819 K and 0.5 atmD273 K and 0.5 atm Like 0 Discuss 0Share
GasesPostulates of Kinetic Molecular Theory72Choose the best answerWhich statement is NOT a postulate of the Kinetic Molecular Theory of an ideal gas?AGas molecules are widely separated and have negligible volumeBGas molecules are in continuous random motionCIntermolecular attractions and repulsions are negligibleDGas molecules have definite volume and shape Like 0 Discuss 0Share
GasesIsothermal Expansion73Choose the best answerDuring isothermal expansion of a fixed amount of an ideal gas: (1) Pressure decreases. (2) Average kinetic energy remains constant. (3) Average kinetic energy decreases. (4) Number of molecules increases.A(1) and (2)B(1), (2) and (4)C(1), (2) and (3)D(2) and (3) Like 0 Discuss 0Share
GasesBoyle's Law74Choose the best answerWhich change makes the volume of a fixed amount of gas four times its initial value at constant temperature?ADoubling the pressureBHalving the pressureCQuadrupling the pressureDReducing the pressure to one-fourth Like 0 Discuss 0Share
GasesMolar Volume at STP75Choose the best answerAt STP (273 K and 1 atm), one mole of an ideal gas occupies approximately:A11.2 dm³B22.4 dm³C44.8 dm³D1.0 dm³ Like 0 Discuss 0Share