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Describe the preparation of 12 mL of a 0.050 M solution of each of the halogens, using the reactions in the preceding question. Available to you are solid Ca(OCl)2; 0.20 M solutions of NaCl, NaBr, NaBrO3, and CuSO4; a 0.40 M solution of NaI; a 0.50 M solution of H2SO4; distilled water; and a 10-mL graduated cylinder (where volumes can be read to the nearest 0.1 mL). Calculate the required quantity of each reagent and the volume of water that must be added for dilution.
a. Chlorine water
b. Bromine water
c. Iodine water
Calculate the pH of the solution, taking into account the activity coefficients for H+ (yH+ = 0.933) and IO3- (yIO3- = 0.928). Assume yHIO3 = 1. (Hint: quadratic)
Hydrogen bromide adds to the triple bond with a regioselectivity dictated by Markovnikov's rule. One mole of HBr adds to one mole of 1-heptyne.
The melting point of a pure compound is known to be 110-111°. Describe the melting behavior expected if this compound is contaminated with 5% of an impurity.
draw the structure of a hydrocarbon that reacts w 2 equivalent of h2 h sub 2 on catalytic hydrogenation and gives only
What is the equilibrium constant for the following reaction CO(g) + 2 H2(g) ? CH3OH(l); [CO] = 0.530 M and [H2] = 0.824 M
Enough of a monoprotic acid is dissolved in water to produce a 0.0131 M solution. The pH of the resulting solution is 2.48.
A certain liquid has a vapor pressure of 92.0 Torr at 23.0 °C and 204.0 Torr at 45.0 °C. Calculate the value of ?H°vap for this liquid. Calculate the normal boiling point of this liquid.
The blank solution used to calibrate the spectrophotometer is 10.0mL of 0.2M Fe(NO3)3 diluted to 25.0mL with 0.1M HNO3. Why is this solution preferred to simply using de-ionized water for the calibration?
Propose a neutral structure for each compound that is consistent with the data. Note that the absolute stereochemical configurations of chiral substances cannot be determined from the data. Arbitrarily draw a configuration for an enantiomer (and b..
Calculate the molar heat of combustion of fructose using the data from this experiment. Since this experiment is carried out under conditions of constant volume, we are measuring ?E. Your answer should be in kJ/mol and entered to 3 sig. fig.
Calculate the equilibrium constant of the reaction I2(g)52 I(g) at 1000 K from the following data for I2: # = 214.36 cm
How many moles of nitroglycerin and how many moles of gas(air, assume no nitroglycerin vapors present)were in the container originally?
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