Stoichiometry What is the simplest formula of a compound containing 50% of element A (atomic weight = 10) and 50% of element B (atomic weight = 20)? AB₂ A₂B₃ AB₃ A₂B AB₂ A₂B₃ AB₃ A₂B 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/m² . s Mole/cm². s Mole/s Kmole/m² . s Mole/m² . s Mole/cm². s Mole/s ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry For water evaporating into usaturated air under adiabatic conditions and at constant pressure, the __________ remains constant throughout the period of vaporisation. Humidity Wet bulb temperature Relative saturation Dry bulb temperature Humidity Wet bulb temperature Relative saturation Dry bulb temperature ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry For the gaseous phase reaction, N₂ + O₂ ⇋ 2NO, ΔH = + 80 kJ/kg. mole; the decomposition of NO is favoured by Decrease in pressure Decrease in temperature Increase in pressure Increasing the concentration of N₂ Decrease in pressure Decrease in temperature Increase in pressure Increasing the concentration of N₂ ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vapourised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is 0.6 0.4 0.2 0.8 0.6 0.4 0.2 0.8 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A metal oxide is reduced by heating it in a stream of hydrogen. After complete reduction, it is found that 3.15 gm of the oxide has yielded 1.05 gm of the metal. It may be inferred that the Atomic weight of the metal is 4 Atomic weight of the metal is 2 Equivalent weight of the metal is 4 Equivalent weight of the metal is 8 Atomic weight of the metal is 4 Atomic weight of the metal is 2 Equivalent weight of the metal is 4 Equivalent weight of the metal is 8 ANSWER DOWNLOAD EXAMIANS APP
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