Stoichiometry If pH value of an acidic solution is decreased from 5 to 2, then the increase in its hydrogen ion concentration is __________ times. 1000 100 10 10000 1000 100 10 10000 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Which of the following has the smallest least effect on the solubility of a solute into the solvent? Pressure Nature of the solute Temperature Nature of the solvent Pressure Nature of the solute Temperature Nature of the solvent ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Gases diffuse faster compared to liquids because of the reason that the liquid molecules Are held together by stronger inter-molecular forces Move faster Are heavier Have no definite shape Are held together by stronger inter-molecular forces Move faster Are heavier Have no definite shape 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/s Mole/m² . s Kmole/m² . s Mole/cm². s Mole/s Mole/m² . s Kmole/m² . s Mole/cm². s ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The osmotic pressure of a solution is directly proportional to the Absolute temperature of a given concentration All of these Molecular concentration of the solute Lowering of vapor pressure Absolute temperature of a given concentration All of these Molecular concentration of the solute Lowering of vapor pressure ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The atomic heat capacities of all solid elements __________ with decrease in temperature. Remains unchanged Decreases Approach zero at 0°C Increases Remains unchanged Decreases Approach zero at 0°C Increases ANSWER DOWNLOAD EXAMIANS APP
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