Stoichiometry Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing ) ? ΔH = 1 (+ ve)and Δ V = -ve ΔH = 0 Both B and C ΔV = 0 ΔH = 1 (+ ve)and Δ V = -ve ΔH = 0 Both B and C ΔV = 0 ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry In a neutral solution H⁺ ions are absent OH⁻ ions are absent Both H⁺ and OH⁻ ions are present in very small but equal concentration None of these H⁺ ions are absent OH⁻ ions are absent Both H⁺ and OH⁻ ions are present in very small but equal concentration None of these ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Refluxing of part of the distillate in a fractionating column is a 'recycling operation', aimed primarily at Product enrichment Heat conservation Yield enhancement None of these Product enrichment Heat conservation Yield enhancement None of these ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry Atoms of the same element, but of different masses are called Isotopes Isobars Isotones None of these Isotopes Isobars Isotones None of these ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The vapor pressure of a substance, at its melting point, is __________ in the solid state as compared to that in the liquid state. Either A or B; depends on the nature of the substance More Same Less Either A or B; depends on the nature of the substance More Same Less ANSWER DOWNLOAD EXAMIANS APP
Stoichiometry The boiling points for pure water and pure toluene are 100°C and 110.6°C respectively. Toluene and water are completely immiscible in each other. A well agitated equimolar mixture of toluene and water are prepared. If, at a total pressure of one standard atm. exerted by the vapours of water and toluene, the mole fraction of water Xw in the vapour phase satisfies Xw = 0.5 0 < Xw < 0.5 0.5 < Xw < 1.0 Xw = 1.0 Xw = 0.5 0 < Xw < 0.5 0.5 < Xw < 1.0 Xw = 1.0 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS