What is the value of gas constant in SI units?

Name two intermolecular force that exists between HF molecules in a liquid state.

What is the difference between normal boiling point and standard boiling point?

Explain the physical significance of van derWaals' parameters.

How much time would it take to distribute one Avogadro number of wheat grains if 10¹⁰ grains are distributed each secon.

The pressure exerted by saturated water vapor is called aqueous tension.what correction term will you apply to the total pressure to obtain a pressure of the dry gas?

What is SI unit of surface tension?

Write expression for Boyle temperature and critical temperature in terms of van der Waals constants.Which one is greater for a particular gas?

Explain the effect of increasing temperature of a liquid on intermolecular forces operating between its particles. What will happen to the viscosity of a liquid if its temperature is increased?

Compressibility factor, Z of a gas is given as \(Z=\frac { pV }{ nRT } \) What is the value of Z an ideal gas?

Critical temperature for carbon dioxide and methane are 31.1^o C and -81.9^o C respectively.Which of these has stronger intermolecular forces and why?

Calculate the total number of electrons present in 1.4g of dinitrogen gas. Convert the given mass into mole with the help of the formula, moles = \(\frac { mass }{ molecular\ mass } \) 1 mole = \(6.022\times { 10 }^{ 23 }molecule\)

Calculate the temperature of 4.0 moles of a gas occupying 5 dm³ at 3.32 bar (R = 0.083 bar dm³ k^-1 mol^-1)

A student forgot to add the reaction mixture to the round bottom flask at 27\(^{o}\) C but instead, he/she placed the flask on the flame. After a lapse of time, he realized his mistake and using a pyrometer he found the temperature of the flask was 477 C. What fraction of air would have been expelled out?

Calculate the total pressure in a mixture of 8 g of dioxygen and 4 g of dihydrogen confined in a vessel of 1 dm³ at 27\(^{o}\)C. (R = 0.083 bar dm³ K^-1 mol^-1)

Density of a gas is found to be 5.46 g/dm³ at 27 C and 2 bar pressure. What will be its density at STP?
Notes: STP mean at 1 bar and 273 K, so compare the density at 27\(^{o}\) C and 2 bar with density at STP by using the relation d = pM/RT

Prove that the excluded volume 'b' is four times the actual volume of the gas molecules.

A balloon is filled with hydrogen at room temperature. It will burst if pressure exceeds 0.2 bar. If at 1 bar pressure the gas occupies 2.27 L volume, upto what volume can the balloon be expanded?

Calculate the total presure in a mixture of 4 g of  0₂ and 2 g of H₂ confined to a total volume of 1 L at 0^oC (R = 0.0821 L atm mol^-1).

Calculate the total and average kinetic energy of 32 g methane molecules at 27^oC(R = 8.314 JK^-1 mol^-1 )

Isotherms of carbon dioxide at various temperatures are represented in the figure. Answer the following questions based on the figure.

What portion of the isotherm at T₁ represent liquid and gaseous CO₂ at equilibrium?