q5 3. (S pts) Consider the following reaction: The rate of appearance of H:0 was
ID: 228990 • Letter: Q
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q5
3. (S pts) Consider the following reaction: The rate of appearance of H:0 was found to be 1.40 disappearance of 1? 10 Ms What is the rate of 4. (12 pts) The value of K, for the synthesis of ICI 0.66 at s certain temperature Calculate the concentration at oquilibrium of 18,, Clh, and HCl, each initially at 0,100 M 5. (II pts) Reserpine is a natural product that has been used as a tranquilizer. The boiling point of a solution containing 3.00 g of reserpine in 12.79 ml, of chloroform is 0.893°C higher than the boiling point of chloroform. The density of chloroform is 1.564 gm Calculate the molar mass of reserpine, For chloroform K 3.88 CmExplanation / Answer
Mass of solute = 3.00 g.
Volume of solvent = 12.79 mL
Density of solvent = 1.564 g/mL
Mass of solvent = volume * density = 12.79 * 1.564 = 20.00 g. = 0.0200 kg.
Kb = 3.88 0C/m
Elevation in boiling point = 0.893 0C
Elevation in boiling point = 1000 * Kb * w / ( W * m)
0.893 = 1000 * 3.88 * 3.00 / ( 20.00 * m )
m = molar mass of solute = 651.7 g/mol
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