A mixture of two volatile liquids A and B is distilled. The boiling point of A is 70°C and that of B is 90°C. Assuming ideal behavior, which of the following statements is true regarding the initial distillate?
The distillate will be richer in A than the original mixture.
The distillate will be richer in B than the original mixture.
The distillate will have the same composition as the original mixture.
The distillate will contain only A.
Related Questions
The empirical formula of an acid is , the probable molecular formula of the acid may be
C3H6O3
C2H4O4
CH2O
C4H4O4
Carbon and hydrogen are estimated in organic compounds by
Kjeldalhl's method
Duma's method
Leibig's method
Carius method
What is the purpose of using a desiccator?
To heat substances
To cool substances
To keep substances dry
To measure pH
Molecular mass of a volatile substances may be obtained by
Beilstein method
Lassaigne method
Victor Mayer's method
Leibig's method
In Lassaigne's solution, pink/violet colouration is produced when sodium nitroprusside solution is added. It indicates the presence of
Sulphur
Nitrogen
Chlorine
None of these
In the estimation of nitrogen by Duma’s method 0.59 g of an organic compound gave 112 mL nitrogen at NTP. The percentage of nitrogen in the compound is about:
11.86%
23.73%
47.46%
35.59%
The silver salt of a monobasic acid on ignition gave 60% of Ag. The molecular weight of the acid is
37
57
73
88
0.25 g of an organic compound on Kjeldahl’s analysis gave enough ammonia to just neutralise 10 of 0.5M . The percentage of nitrogen in the compound is
28
56
14
112
The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen was passed in 100 mL of 0.1 M sulphuric acid. The excess of acid required 20 mL of 0.5 M sodium hydroxide solution for complete neutralization. the organic compound is
acetamide
benzamide
urea
thiourea
A mixture of acetone and methanol can be separated by
Steam distillation
Vaccum distillation
Fractional distillation
None of these
