Stoichiometry Heat of transition is the heat evolved or absorbed, when a substance is converted from Solid to liquid Vapor to solid Vapor to liquid One allotropic form to another allotropic form Solid to liquid Vapor to solid Vapor to liquid One allotropic form to another allotropic form ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water Xw in the vapour phase satisfies Xw = 1.0 0 < Xw < 0.5 0.5 < Xw < 1.0 Xw = 0.5 Xw = 1.0 0 < Xw < 0.5 0.5 < Xw < 1.0 Xw = 0.5 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 1 kg of calcium carbide (CaC₂) produces about 0.41 kg of acetylene gas on treatment with water. How many hours of service can be derived from 1 kg of calcium carbide in an acetylene lamp burning 35 litres of gas at NTP per hour? 10 20 5 15 10 20 5 15 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The latent heat of vaporisation Decreases as pressure increases All of these Becomes zero at the critical point Decreases with increased temperature Decreases as pressure increases All of these Becomes zero at the critical point Decreases with increased temperature ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 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 1/9 8/9 5/9 1/2 1/9 8/9 5/9 1/2 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry 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 0.74xl0⁻⁵m²/s.The numerical value of mass transfer co-efficient is 7.4 x 10⁻³. The rate of evaporation of aniline is 2.97 x 10⁻⁴. Its units are Kmole/m² . s Mole/cm². s Mole/m² . s Mole/s Kmole/m² . s Mole/cm². s Mole/m² . s Mole/s ANSWER DOWNLOAD EXAMIANS APP
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