Stoichiometry Questions

• The pressure of 'V' litres of a dry gas is increased from 1 to 2 kgf/cm2 at a constant temperature. The new volume will become
• During a phase change process like sublimation, vaporisation, melting etc., the specific __________ does not change.
• The number of atoms of oxygen present in 11.2 litres of ozone (O3) at N.T.P. are
• 1 Pascal (unit of pressure) is equal to __________ N/m2.
• An oxidation process is accompanied by decrease in the
• Colligative properties of a dilute solution are those, which depend entirely upon the
• pH value of an alkaline solution is
• Pick out the wrong statement.
• According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition.
• A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is
• The hydroxyl ion (OH-) concentration in a solution having pH value 3 will be
• Pick out the wrong conversion formula for the conversion of weight units :
• The net heat evolved or absorbed in a chemical process, i.e. total change in the enthalpy of the system is independent of the
• The osmotic pressure of a solution increases, if its __________ is decreased.
• Simultaneous doubling of the absolute temperature of a gas and reduction of its pressure to half, will result in __________ in the volume of the gas.
• Real gases approach ideal behaviour at
• Refluxing of part of the distillate in a fractionating column is a 'recycling operation', aimed primarily at
• The vapor pressure of liquids (having similar chemical nature) at any specified temperature __________ with increasing molecular weight.
• 40 gms each of the methane and oxygen are mixed in an empty container maintained at 40°C. The fraction of the total pressure exerted by oxygen is
• The temperature at which the second Virial co-efficient of a real gas is zero is called the