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Friday, January 31, 2020
Calculate the amount of 80 % pure NaOH sample required to react with 21.3 gm Chlorine in hot condition.
Related Questions:
200 gm of CaCO3 sample on heating produces 11.2 liters of CO2 (g) at STP. Calculate % purity of CaCO3 sample?
Wednesday, January 29, 2020
Write total fuctional isomers of molecular formula C5H10O.
Arrange the following compounds 2-Methylhexane in order of their increasing of (A) boiling point and (B) melting point ? (1) n-hexane (2) 2-methyl hexane (3) 2, 2-dimethyl pentane (4) 2, 3-dimethyl pentane.
(A) BoiIing point on alkane is directly
proportional to their molecular weight and inversely proportional to
branching. Therefore, the increasing order is (1)
< (3) < (4) < (2)
(B) Melting point of alkane is directly
proportional to molecular weight as well as branching of alkane because
increased branching leads to a more compact molecule. Thus the increasing order
is (1) < (2) < (4) < (3).
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