Stoichiometry The pH value of a solution is 5.9. If the hydrogen ion concentration is decreased hundred times, the solution will be More acidic Of the same acidity Basic Neutral More acidic Of the same acidity Basic Neutral ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry According to Raoult's law, "The vapor pressure exerted by component in a solution is proportional to the mole fraction of that component." Raoult's law is not applicable under the following assumption/condition. The attractive forces between like and unlike molecules are almost equal No component is concentrated at the surface of the solution The component molecules are non polar and are of almost equal size In the formation of solution, chemical combination/molecular association between unlike molecules takes place The attractive forces between like and unlike molecules are almost equal No component is concentrated at the surface of the solution The component molecules are non polar and are of almost equal size In the formation of solution, chemical combination/molecular association between unlike molecules takes place ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The heats of vaporisation of CS₂, C₂H₅OH &H₂O are 26.8, 38.6 & 40.6 KJ/kg mole respectively. The order of decreasing inter-molecular forces in these liquids is CS₂ > H₂O > C₂H₅OH H₂O > C₂H₅OH > CS₂ H₂O > CS₂ > C₂H₅OH CS₂ > C₂H₅OH > H₂O CS₂ > H₂O > C₂H₅OH H₂O > C₂H₅OH > CS₂ H₂O > CS₂ > C₂H₅OH CS₂ > C₂H₅OH > H₂O ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The forces causing the vaporisation of liquid are derived from the Kinetic energy of translation of its molecules. The heat of vaporisation Becomes zero at the critical point Both B & C Decreases with increasing pressure Increases with pressure rise Becomes zero at the critical point Both B & C Decreases with increasing pressure Increases with pressure rise ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry One of the specific gravity scales is "Brix" (used speicifically for sugar solution). It is defined as Brix = 200 (G-1) Brix = 145 - (145/G) None of these Brix = (400/G) - 400 Brix = 200 (G-1) Brix = 145 - (145/G) None of these Brix = (400/G) - 400 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry A gas occupies a volume of 283 c.c at 10°C. If it is heated to 20°C at constant pressure, the new volume of the gas will be __________ c.c. 141.5 283 293 566 141.5 283 293 566 ANSWER DOWNLOAD EXAMIANS APP
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