GasesPostulates of Kinetic Molecular Theory66Choose the best answerWhich statements are assumptions of the Kinetic Molecular Theory of an ideal gas? (1) Intermolecular forces are negligible. (2) Molecules are in continuous random motion. (3) Molecular volume is negligible compared with container volume.A(1), (2) and (3)B(1) onlyC(2) and (3) onlyD(1) and (2) only Like 0 Discuss 0Share
GasesVapour Density and Molar Volume67Choose the best answerAt STP (273 K and 1 atm), 11.2 g of a gas has a vapour density of 11.2. What volume does it occupy?A2.0 LB4.0 LC11.2 LD22.4 L Like 0 Discuss 0Share
GasesCharles's Law and Absolute Zero68Choose the best answerAccording to the ideal-gas extrapolation of Charles's law, the gas volume becomes zero at:A273 KB100 KC0 KD273°C Like 0 Discuss 0Share
Gasesvan der Waals Equation69Choose the best answerThe van der Waals equation for one mole of a real gas is:A(P + a/V²)(V − b) = RTB(P − a/V²)(V + b) = RTCPV = RTD(P + a)(V − b) = RT Like 0 Discuss 0Share
GasesBoyle's Law70Choose the best answerA gas occupies 600 cm³ at 750 mmHg. It is compressed to 500 cm³ at constant temperature. What is the increase in pressure?A150 mmHgB250 mmHgC350 mmHgD450 mmHg Like 0 Discuss 0Share