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In a similar procedure the infrared spectrum of the crude acid chloride revealed the presence of an impurity having two strong bands at 1763 and 1720 cm-1. Examine of the impurity by mass spectrometry revealed a parent ion at m/e peak of 254. As well present were strong peaks at m/e = 119 and m/e = 91. Explain what is the product +HCl?
Explain what fragments were responsible for the strong peaks at m/e = 119 and m/e = 91?
Calculate the pH of a solution that is 1.20×10^?3 M in HCl and 1.00×10^?2 M in HClO2. Express your answer using three decimal places
What is the pH of a buffer prepared by adding 0.45 mol of the waek acid HA to 0.608 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66e-7
Describe and explain the possible effect on your results of the following experimental errors or variations. a) you added only enough 3 M H2SO4 to bring the pH down to 4.
Compute the molar solubility of lead (II) chloride in a solution of 0.55 M NaCl. The solubility product for lead (II) chloride 1.7 x 10 -5.
Show your calculations for the pH when 0.00 mL, 4.00 mL, 6.00 mL, 12.00 mL (equivalence point), and 16.00 mL of 0.10 M HCl have been aded to an initial
A beaker with 100 mL of an acetic acid buffer with a pH of 5.00 is sitting on a benchtop. The total molarity of acid and conjugate base in this buffer is 0.100 M. A student adds 8.60 mL of a 0.380 HCl solution to the beaker. How much will the pH c..
A student wished to prepare a Gringnard reagent from p-bromophenol. After working up the reaction mixture the student discovered the product was actually unreacted starting material. Explain why this experiment was unsuccessful.
A 75.0 mL volume of 0.200 M NH3 (Kb=1.8*10^-5) is titrated with 0.500 M HNO3. Calculate the pH after the addition of 13.0 mL of HNO3.
You take 306.5 g of a solid at 30.0 C and let it melt in 400. g of water. The water temperature decreases from 85.1 C to 30.0 C. Calculate the heat of fusion of this solid.
At what pressure does the mean free path of argon at 25C become comparable to the size of 1dm^3 vessel that contains it? take ?=.36nm^2
a solution contining agno3 is mixed with a solution of nacl to form a solution that is 0.10 m in agno3 and 0.075 m
Calculate the quantity of gas, in moles, if 127 L at 55.0 C has a pressure of 11.35 kPa.
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