Stoichiometry A very dilute solution is prepared by dissolving 'x1' mole of solute in 'x2' mole of a solvent. The mole fraction of solute is approximately equal to X1/x2 1 - (x1/x2) 1/x2 X2/x1 X1/x2 1 - (x1/x2) 1/x2 X2/x1 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 Mole/cm². s Mole/m² . s Kmole/m² . s Mole/s Mole/cm². s Mole/m² . s Kmole/m² . s Mole/s ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Addition of a non-volatile solute to a pure solvent Decreases its freezing point Both B and C Increases its boiling point Increases its freezing point Decreases its freezing point Both B and C Increases its boiling point Increases its freezing point ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry How many phases are present at eutectic point? 3 1 2 Unpredictable 3 1 2 Unpredictable ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Degrees of freedom will be equal to the number of components for a system comprising of Partially miscible two liquid components system having two phases None of these Only soluble liquid components Two liquid components and one solute (soluble in both the liquids) Partially miscible two liquid components system having two phases None of these Only soluble liquid components Two liquid components and one solute (soluble in both the liquids) ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The effect of pressure on the heat capacity of the gases __________ is negligible. Neither A nor B Both A & B Below the critical temperature At pressure below one atmosphere Neither A nor B Both A & B Below the critical temperature At pressure below one atmosphere ANSWER DOWNLOAD EXAMIANS APP
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