Stoichiometry MCQs

Gases having same reduced temperatures and reduced pressures

In which of the following case of mixing of a strong acid with strong base (each of 1N concentration), temperature increase will be the highest?

The osmotic pressure of a solution increases, if its __________ is decreased.

The vapor pressure of liquids (having similar chemical nature) at any specified temperature __________ with increasing molecular weight.

1 Pascal (unit of pressure) is equal to __________ N/m².

Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is

The value of gas constant 'R' is __________ kcal/kg.mole.°C.

In a binary liquid solution of components A and B, if component A exhibits positive deviation from Raoult's law, then component B

Pure aniline is evaporating through a stagnant air film of 1 mm thickness at 300 K and a total pressure of 100 KPa. The vapor pressure of aniline at 300 K is 0.1 KPa. The total molar concentration under these conditions is 40.1 mole/m³. The diffusivity of aniline in air is 0.74 × 10^-5 m²/s.The numerical value of mass transfer co-efficient is 7.4 × 10^-3. The rate of evaporation of aniline is 2.97 × 10^-4. Its units are