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Questions on H-NMR spectrum of isopentyl acetate.
1.On the attached H-NMR spectrum of isopentyl acetate, draw the structure of the compound, label the proton groups and show the peak to proton group correlations.
2.What would the effect on yield be of allowing the crushed Dry Ice to be exposed to the atmosphere for long periods of time before being used? Explain your answer.
When 0.490 kJ of heat is added to the gas, it expands and does 211 J of work on the surroundings. What is the value of delta H and delta E for this process?
Adipic acid can be prepared by the oxidation cleaveage of the CC double bond of cyclohexne. If you require 12.5g of adipic acid what volume of cyclohexene
What is the molecular formula of the compound? , draw Structures for the molecule (1 bonus mark for every acceptable structure, up to a maximum of 5 bonus marks).
A particular Lake contains 10^10 liter of water. Due to acidification, the pH of the Lake is 5.00. It has been decided to add enough calcium carbonate to the lake to bring the pH to 6.00.
A chemist wants to prepare 0.65 M HCl. Commercial hydrochloric acid is 12.4 M. How many milliliters of the commercial acid does the chemist require to make up 1.48 L of the dilute acid?
Using Hard-Soft Acid-Base Theory, classify each of the species in the following equilibrium as hard or soft and indicate whether reactants or products will be favored
BaSO4 is listed as insoluble. Actually, BaSO4 is highly soluble, Ksp=1.1e-10. What is the solubility, in mg/l?
the enthalpy of vaporization of ethanol i 43.5 kj/mole at its normal boiling point of 352 k. using avalue of the molar heat capacity of liquid ethanol of 111.46 j/k/mol
Nitrogen dioxide is obtained in a cylinder, but exists in equilibrium with dinitrogen tetrooxide. A 5.00g sample of this mixture is transferred to a 0.5L flask at 298K.
A buffer solution contains 0.71 mol of boric acid (H3BO3) and 0.53 mol of sodium dihydrogen borate (NaH2BO3) in 4.00 L. The Ka of boric acid (H3BO3) is Ka = 5.8e-10. What is the pH of the buffer after the addition of 0.50 mol of NaOH
If 25.00 mL of 0.07976 M benzoic acid is neutralized by 26.48 mL 0.07530 M NaOH, calculate the quantities of benzoic acid and NaOH you would need to prepare the volume of 1:1 buffer.
Assume that sucrose is a molecular solid and does not ionize when it dissolves in water. Kf values are given here.
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