A student collected 17.14 ml of H₂ over water at 25.00 °C. The water level inside the collection apparatus was 9.5 cm higher than the water level outside. The barometric pressure was 736 torr. How many grams of zinc had to react with HCl(aq) to produce the H₂ that was collected? You may need the data in the table to solve this problem. mass= gZn Table 10.2 Vapor Pressure of Water at Various Temperatures Temperature Vapor Pressure Temperature Vapor Pressure (C) (torr) (C) (torr) 0 4.579 50 92.51 5 6.543 55. 118.04 10. 9.209 60 149.38 15 12.788 65 187,54 20 17.535 70 233,7 25 23.756 75 289.1

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Kinetic-Theory of Gases

Kinetic theory of gases is the model or method which was developed in the 19th century by Maxwell and Boltzmann. This is possible as the interatomic force which is of short-range forces that are important for solids and liquids can be neglected for gases. This theory or gas law gives a molecular interpretation of the pressure and temperature of a gas and is consistent with gas laws and Avogadro’s hypothesis. This theory is very helpful to correctly explain the specific heat capacities of many gases, kinetic energy and it also explains the transport qualities such as viscosity, thermal conductivity, and diffusion with molecular parameters. As stated in the kinetic-molecular theory, the temperature of a substance or gas particle is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles, called average kinetic energy.