HSC Science Class 11 - Tamil Nadu Board of Secondary Education Question Bank Solutions for Chemistry

Why alkaline earth metals are harder than alkali metals?

Which of the following is the correct expression for the equation of state of van der Waals gas?

The value of the universal gas constant depends upon

Compressibility factor for CO₂ at 400 K and 71.0 bar is 0.8697. The molar volume of CO₂ under these conditions is

Maximum deviation from ideal gas is expected from

Which of the following diagrams correctly describes the behaviour of a fixed mass of an ideal gas? (T is measured in K)

25 g of each of the following gases are taken at 27°C and 600 mm Hg pressure. Which of these will have the least volume?

Explain how will you predict the direction of an equilibrium reaction.

In what way real gases differ from ideal gases.

Can a Van der Waals gas with a = 0 be liquefied? explain.

Suppose there is a tiny sticky area on the wall of a container of gas. Molecules hitting this area stick there permanently. Is the pressure greater or less than on the ordinary area of walls?

Explain whether a gas approaches ideal behavior or deviates from ideal behaviour if it is compressed to a smaller volume at a constant temperature.

Explain whether a gas approaches ideal behavior or deviates from ideal behaviour if the temperature is raised while keeping the volume constant.

Explain whether a gas approaches ideal behavior or deviates from ideal behaviour if more gas is introduced into the same volume and at the same temperature.

Which of the following gases would you expect to deviate from ideal behavior under conditions of low-temperature F₂, Cl_2, or Br₂? Explain.

Write the Van der Waals equation for a real gas. Explain the correction term for pressure and volume.

An ideal gas expands from the volume of 1 × 10^–3 m³ to 1 × 10^–2 m³ at 300 K against a constant pressure at 1 × 10⁵ Nm^–2. The work done is

The work done by the liberated gas when 55.85 g of iron (molar mass 55.85 g mol^–1) reacts with hydrochloric acid in an open beaker at 25°C

Define enthalpy of combustion.

Define enthalpy of neutralization.