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If the addition of bromine to ethene in the presence of high concentration of chloride ion in an inert solvent results in the formation of 1,2-dibromoethane as well as 1-bromo-2-chloroethane. No 1, 2-dichloroethane is obtained. Define above experimental facts utilizing a suitable mechanistic sequence.
When separating a solid-solid mixture in lab, do the melting points of the two components have to be 30 degrees apart, like with boiling points, to be considered pure, or is it a different range?
A solution is made witmlh 20.2ml of CH3OH ( density= 0.782g/ml), dissolved in 100.ml of water (density = 1.00 g/ml). Calculate the concentration in the units of:
calculate the concentration of a monotropic basic solution given that 99.3ml of the basic solution is neutralized by
find the molar mass of the unknown. 16.6 degrees C freezing point acetic acid and 3.90 degrees C*kg/mol?
in the preparation of sulfanilamide why was aqueous sodium bicarbonate rather than aqueous sodium hydroxide used to
What volume of base, in milliliters, is required to reach the equivalence point? (c) What is the pH at the equivalence point.
If 329 g water at 65.7°C loses 9730 J of heat, what is the final temperature of the water?
a 10.9 mol sample of argon gas is maintained in a 0.787 l container at 298 k. what is the pressure in atm calculated
Sulfur has two solid forms - a (or rhombic) and b (or monoclinic). The standard enthalpies of combustion, in which the product is SO2, are -296.53 kJ/mol for S(s,a) and -296.86 kJ/mol for S(s,b). Find the standard reaction enthalpy for the process..
Calculate [Cr3+] in equilibrium with Cr(OH)4- when 0.01 mol of Cr(NO3)3 is dissolved in a liter of solution buffered at pH 10.0
A particular first-order reaction has a rate constant of 1.35 × 102 s-1 at 25.0 °C. What is the magnitude of k at 75.0 °C if Ea=49.8 kJ/mol
A feed mixture weighing 200 kg of unknown composition containing water, acetic acid, and isopropyl ether is contacted in a single stage with 280 kg of a mixture
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