Stoichiometry The crystallisation of a solute from a solution may be done by All of these Changing the nature of the system by the addition of a more soluble material Removal of pure solvent by evaporation Change of temperature thereby causing supersaturation All of these Changing the nature of the system by the addition of a more soluble material Removal of pure solvent by evaporation Change of temperature thereby causing supersaturation ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Pick out the wrong unit conversion of mass transfer co-efficient. 1 lb/hr . ft² = 4.8823 kg/hr . m² 1 kg/hr.m².atm= 0.98687 kg/hr. m .bar 1 lb/hr.ft³.atm. = 4.8182 kg/hr.m².bar 1 kg/hr . m² = 4.8823 lb/hr . ft² 1 lb/hr . ft² = 4.8823 kg/hr . m² 1 kg/hr.m².atm= 0.98687 kg/hr. m .bar 1 lb/hr.ft³.atm. = 4.8182 kg/hr.m².bar 1 kg/hr . m² = 4.8823 lb/hr . ft² ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Addition of a non-volatile solute to a pure solvent Increases its freezing point Both B and C Increases its boiling point Decreases its freezing point Increases its freezing point Both B and C Increases its boiling point Decreases its freezing point ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In the reaction, represented by Na₂CO₃ + HC₁ → NaHO₃ + NaCl, the equivalent weight of Na₂CO₃ is 5.3 106 10.6 53 5.3 106 10.6 53 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Kopp's rule is useful for the determination of Heat capacities of solids Activation energy Heat capacities of gases Molal heat capacities of gases Heat capacities of solids Activation energy Heat capacities of gases Molal heat capacities of gases ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The vapor pressure of the solvent decreased by 10 mm Hg, when a non-volatile solute was added to the solvent. The mole fraction of the solute in the solution is 0.2. What should be the mole fraction of the solvent, if the decrease in vapor pressure of the solvent is required to be 20 mm Hg.? 0.6 0.4 0.1 0.2 0.6 0.4 0.1 0.2 ANSWER DOWNLOAD EXAMIANS APP
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