Stoichiometry Two solutions A₁ and A₂ have pH value of 2 and 6 respectively. It implies that the solution Both A & C A₁ is highly acidic A₁ is very slightly acidic A₁ is more alkaline than solution A₂ Both A & C A₁ is highly acidic A₁ is very slightly acidic A₁ is more alkaline than solution A₂ ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In the reaction, Ca + 2H₂O = Ca(OH)₂ + H₂ ; what volume (c.c.) of hydrogen at STP would be liberated, when 8 gm of calcium reacts with excess water? (atomic weight of calcium = 40) 1120 2240 4480 0.4 1120 2240 4480 0.4 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. Its units are Mole/m².s.Pa M/s Cm/s Kmole/m².s.Pa Mole/m².s.Pa M/s Cm/s Kmole/m².s.Pa ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Assume that benzene is insoluble in water. The normal boiling points of benzene and water are 80.1 and 100°C respectively. At a pressure of 1 atm, the boiling point of a mixture of benzene and water is 80.1°C Greater than 80.1°C but less than 100°C 100°C Less than 80.1°C 80.1°C Greater than 80.1°C but less than 100°C 100°C Less than 80.1°C ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Increasing the temperature of an aqueous solution will cause decrease in its Mole fraction Molality Molarity Weight percent Mole fraction Molality Molarity Weight percent ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The vapour pressure of water is given by, in Psat = A - (5000/T), where A is a constant, Psat is the vapour pressure in atm. and T is the temperature in K.The vapor pressure of water in atm. at 50°C is approximately 0.13 0.09 0.11 0.07 0.13 0.09 0.11 0.07 ANSWER DOWNLOAD EXAMIANS APP
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