Stoichiometry MCQs

Mass number of an atom is the sum of the numbers of

C_p equals C_v at

The pressure under which liquid and vapor can co-exit at equilibrium is called the __________ vapor pressure.

The OH^- concentration in a solution having pH value 3 is

Equal masses of CH₄ and H₂ are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is

Which of the following ideal gas laws are not applicable to mixture of gases ?

1 kgf/cm² is not equal to

A vessel of volume 1000 m³ contains air which is saturated with water vapour. The total pressure and temperature are 100 kPa and 20°C respectively. Assuming that the vapour pressure of water at 20°C is 2.34 kPa, the amount of water vapour (in kg) in the vessel is approximately

The heat evolved in the combustion of benzene is represented by the equation:
C₆H₆ + 7.5O₂ = 6CO₂ + 3H₂O, ΔH = 3264.6 kJ/kg.mole
The heat energy change, when 39 gm of C₆H₆ is burnt in an open container, will be __________ kJ/kg.mole.