An effusion cell has a circular hole of diameter 3.00 mm. If the molar mass of the solid in the cell is 300 g mol−1 and its vapour pressure is 0.224 Pa at 450 K, by how much will the mass of the solid decrease in a period of 24.00 h?

Q: The decomposition of a generic diatomic element in its standard state is represented by the equation…

A: Answer:Here:

Q: The decomposition of a generic diatomic element in its standard state is represented by the equation…

A: Given :

Q: The decomposition of a generic diatomic element in its standard state is represented by the equation…

A: Since X2(g) is in standard state, its Gibbs free energy is 0 i.e ∆Gf(X2, g) = 0 kJ/mol  First, we…

Q: A sample of water vapor at 227 °C at 202.6 kPa is cooled to 197 °C and then expanded to 101.3 kPa.…

A: Gibbs energy is the energy of a chemical reaction that can be applied to conduct non-mechanical…

Q: Suggest a physical interpretation of the dependence of the Gibbs energy on the pressure.

A:

Q: A chemist mixed 2.3 M of A, 1.6 M of B, and 0.7 Mof C to a sealed container at 750 K: A(g) + B(aq)…

A: Given reaction is :  A (g) + B (aq) <------------->2C (g) , Kc = 9.8 x 10-1  Concentration of…

Q: Calculate the standard molar Gibbs energy of neon gas at 298 K.

A: The standard molar Gibbs energy at any temperature T can be expressed as follows:

Q: Hexafluorobenzene (C6F6) has a vapour pressure of 1.23 × 104 N m–2 at 300 K. Predict the vapour…

A:

Q: Calculate the difference in Gibbs energy of a prefect gas if the pressure is increased by 20% at…

A:

Q: At 25 °C, the equilibrium partial pressures for the reaction A(g) + 2 B(g) 4 C(g)+D(g) were found to…

A: Given data :

Q: Calculate the magnitude of the difference between the Gibbs and the Helmholtz free energies at 25…

A: Interpretation -  To determine the magnitude of the difference between the Gibbs and the Helmholtz…

Q: None

A: To calculate the Gibbs free energy of the mixture when the separation between the two parts is…

Q: The difference in a chemical potential of a particular substance between two regions of a system is…

A: The Gibbs energy change for transfer of dn moles of a substance from region 1 with chemical…

Q: Calculate (a) the standard reaction entropy and (b) the change in entropyof the surroundings (at 298…

A: SOLUTION: Step 1: (a) Species S0 (J/mol. K) ΔHf (KJ/mol) N2 (g) 191.5 0 H2 (g)…

Q: Estimate the change in the Gibbs energy of 2 g of Argon when  the pressure  is increased from 760…

A: Gibbs free energy depands number of moles, Temperature and change in pressure

Q: For 0.002 mol kg-¹ CaCl₂ at 25 °C, use the Debye-Hückel limiting law to calculate its mean ionic…

A:

Q: Calculate the difference in Gibbs energy of a perfect gas if the pressure is increased by 20% at…

A: Gibbs free Energy (ΔG): In a reversible system at constant temperature and pressure, Gibbs energy is…

Q: Suppose that 6.5 mmol argon gas occupies 42 cm^3 at 298 K and expands isothermally to 162 cm^3.…

A: Given: Moles of argon gas   = 6.5 mmol Initial volume of gas = 42 cm3 Final volume of gas  = 162 cm3…

Q: The reduction of iron(III) oxide (Fe,O,) to pure iron during the first step of steelmaking, 2…

A:

Q: For a particular reaction, AH = 73.5 kJ and AS = 193.7 J/K. Assuming these values change very little…

A:

Q: The decomposition of a generic diatomic element in its standard state is represented by the equation…

A: Given :  At 2000 K  ∆G° = 4.94 KJ mol-1  At 3000 K  ∆G° = -62.81 KJ mol-1

Q: The change in the molar volume accompanying fusion of solid benzene is 0.5 cm³/mol. Determine the…

A:

Q: Why does the chemical potential vary with (a) temperature, (b) pressure?

A: The chemical potential of any substance varies with changes in temperature. It is also dependent on…

Q: The change in the Gibbs energy of a certain constant-pressure process was found to fit the…

A: We need to find delta(S) from delta(G).

Q: The conventional standard Gibbs energy of ammonia at 25 °C is -16.5 kJ/mol. Calculate the value of…

A: To calculate the molar Gibbs energy at different pressures, we can use the equation:ΔG = ΔG° + RT…

Q: The variation of vapor pressure of diethyl ether with temperature at its normal boiling temperature…

A: Clausius-Clapeyron equation is the equation where the vapor pressure, P, enthalpy of vaporization,…

Q: Estimate the change in the Gibbs energy of 100cm3 of water when the pressure acting on it is…

A: Volume of water = 100cm^3 Initial pressure = 100kPa Final Pressure = 500kPa Mass density of water =…

Q: If we have a hydrophobic molecule in aqueous solution that makes contact with 25 water molecules,…

A: Hydrophobic molecules do not interact with the water molecule at normal temperature. Mixing of…

Q: 4) a) A reaction chamber is divided into two sections by a partition on which a valve is inserted.…

A:

Q: For 0.002 mol kg-1 CaCl2 at 25 °C, use the Debye-Hückel limiting law to calculate its mean ionic…

A:

Q: [3] (b) Formulate the criteria of spontaneity at constant volume and pressure by using the Helmholtz…

A:

Q: What is the enthalphy, entropy and Gibbs energy of 2NaN3(s)> 2Na(s ) +3N2(g)

A: Entropy is defined as degree of randomness or disorderliness present in a molecule.If a molecule is…

Q: Consider a container of volume 100 L which is divided by the partition into the two compartments of…

A: The formula for Gibbs energy of mixing is- ∆mixG=nRT(xAln xA+xBln xB)…

Q: At 25 °C, the equilibrium partial pressures for the reaction 3 A(g) + 2 B(g) = C(g)+ 2 D(g) were…

A: The given chemical equilibrium reaction is as follows,3A(g)+2B(g)⇌C(g)+2D(g)Partial pressure of…

Q: Calculate the change in chemical potential of a perfect gas when its pressure is increased…

A: The change in chemical potential (molar Gibb's free energy change) of a perfect gas can be…

Q: The chemical potential of a particular substance in the region A of a system is 5kJ higher than…

A: Since the relationship between change in gibbs free energy and chemical potential is given by  ΔG =…

Q: At 25 °C, the equilibrium partial pressures for the reaction 2 A(g) + 4 B(g) =2C(g)+D(g) were found…

A:

Q: Estimate the change in Gibbs energy when 1.0 mol benzene is mixed with 0.5 mol toluene at 300 K.

A: Moles of benzene = 1.0 mol Moles of toluene = 0.5 mol Temperature = 300 K

Q: Chemistry

A: The concept of chemical potential is a fundamental thermodynamic quantity that represents the…

Q: When 50 cm3 of hydrochloric acid of concentration 2.0 mol dm−3 is added to 50 cm3 ofsodium hydroxide…

A: The objective of the question is to find out the temperature increase when the volume of…

Q: The half-life is 123 min at 15.0°C. If 138.0 mL of a 0.105 M NH₂NO₂ solution is allowed to…

A: Given, t1/2 = 123 min. The volume of NH2NO2 = 138.0 mL The concentration of NH2NO2 = 0.105 M The…

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.