Question
Download Solution PDF______ states that the rates of diffusion of gases are inversely proportional to the square roots of their densities under similar conditions of temperature and pressure.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Graham's Law.
Key Points
- Graham's law states that the rates of diffusion of gases are inversely proportional to the square roots of their molar masses under similar conditions of temperature and pressure.
- This means that a gas with a lower molar mass will diffuse more quickly than a gas with a higher molar mass.
- For example, hydrogen (H2) has a molar mass of 2.016 g/mol, while oxygen (O2) has a molar mass of 32.000 g/mol.
- This means that hydrogen will diffuse 4.5 times faster than oxygen at the same temperature and pressure.
- Graham's law can be used to calculate the rate of diffusion of a gas.
- The formula for Graham's law is: r = k * √(M)
- Where:
- r is the rate of diffusion
- k is a constant
- M is the molar mass of the gas
- The value of k can be determined experimentally.
- Graham's law is a useful tool for understanding the behaviour of gases.
- It can be used to predict how gases will diffuse, and it can be used to calculate the rate of diffusion of a gas.
Additional Information
- Tyndall's Law states that the scattering of a beam of light by particles in a medium is inversely proportional to the fourth power of the wavelength of light.
- This means that shorter wavelengths of light are scattered more easily than longer wavelengths.
- Pascal's Law states that pressure exerted anywhere in an enclosed fluid is transmitted equally in all directions throughout the fluid.
- This means that if you increase the pressure at one point in a fluid, the pressure will increase at all points in the fluid.
- Kepler's Laws are three laws that describe the motion of planets around the sun.
- The first law states that planets orbit the sun in elliptical orbits.
- The second law states that the speed of a planet is greatest when it is closest to the sun and least when it is farthest from the sun.
- The third law states that the square of the period of a planet's orbit is proportional to the cube of the semi-major axis of its orbit.
Last updated on Jun 26, 2025
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