Chemical Engineering :: Stoichiometry
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Heat of neutralisation of a strong acid and strong base is always a constant value, i.e., 57 KJ/Kg mole. This is because
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1 gm mole of an alcohol whose molecular weight is 74 contains 48 gms of carbon, 10 gms of hydrogen and 16 gms of oxygen. Its molecular formula is
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A solution with reasonably permanent pH is called a/an __________ solution.
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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.
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Pick out the wrong unit conversion of heat transfer rate.
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A gas at 0°C is cooled at constant pressure until its volume becomes half the original volume. The temperature of the gas at this state will be
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Colligative properties of a dilute solution are those which depend entirely upon the
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For an ideal solution, the total vapor pressure varies __________ with the composition(expressed as mole fraction).
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Pick out the wrong statement.
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Measurement of the amount of dry gas collected over water from volume of moist gas is based on the
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A.
Atomic heat capacities of the crystalline solid elements are nearly constant and equal to 6.2 kcal/kg-atom according to the law of Petit and Dulong.
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B.
Atomic heat capacities of all solid elements decrease greatly with decrease in temperature, approaching a value of zero at absolute zero temperature, when in the crystalline state.
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C.
Generally, the heat capacities of compounds are lower in the liquid than in the solid state.
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D.
The heat capacity of a heterogeneous mixture is an additive property, but when solutions are formed, this additive property may no longer exist.
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