Stoichiometry 80 kg of Na₂SO₄ (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na₂SO₄ .10H₂O crystals separate out. The weight fraction of Na₂SO₄ in the remaining solution is 0.18 0.24 1 0.18 0.24 1 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Gases diffuse faster compared to liquids because of the reason that the liquid molecules Have no definite shape Move faster Are held together by stronger inter-molecular forces Are heavier Have no definite shape Move faster Are held together by stronger inter-molecular forces Are heavier ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The value of Trouton's ratio (λb/Tb) for a number of substances is 21 (where, λb = molal that of vaporisation of a substance at its normal boiling point, KCal/kg. mole and Tb = normal boiling point, °K). The Kis-tyakowsky equation is used for calculation of Trouton's ratio of __________ liquids. Neither A nor B Non-polar Both A & B Polar Neither A nor B Non-polar Both A & B Polar ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry At higher temperatures, molal heat capacities for most of the gases (at constant pressure) __________ with increase in temperature. Increases Does not vary Decreases Varies linearly Increases Does not vary Decreases Varies linearly ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The vapor pressure of liquids (having similar chemical nature) at any specified temperature __________ with increasing molecular weight. Remains unchanged Decreases Increases Increases linearly Remains unchanged Decreases Increases Increases linearly ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is Unchanged by the pressure change Independent of the temperature Decreased with the increase in pressure Increased with the increase in pressure Unchanged by the pressure change Independent of the temperature Decreased with the increase in pressure Increased with the increase in pressure ANSWER DOWNLOAD EXAMIANS APP
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