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What gas escaped during the sodium bicarbonate washing? Write balanced equations for two reactions that took place during this operation.
Experiment: Preparation of synthetic banana oil
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Reaction mixture: acetic acid,isopentyl alcohol,sulfuric acid
Step: reflux
Product mixture: isopentyl acetate,acetic acid*, isopentyl alcohol*,sulfuric acid,water,by-products(*=unreacted starting materials)
Step:wash
AQ layer: water,acetic acid and sulfuric acid as salts organic layer: isopentyl acetate, isopenty alcohol, water (trace), by-products
Assuming the enthalpies are equivalent to free energies (they arent, but lets make the assumption for the moment), what are the equilibrium constants for the two equilibria in the gas phase?
Use the solution pH to calculate the concentration of hydronium ion present
The freezing-point depression measurement of benzoic acid in acetone yields a molar mass of 122 g; the same measurement in benzene gives a value of 242 g
Aluminum nitrate and annonium chloride react to produce aluminum chloride, nitrogen and water. what mass of aluminum chloride is present after 43 g of aluminum nitrate and 43 g of amminium chloride have reacted completely
Calculate whether soils in the region are subject to excessive sulphate loading if the only source of sulphate is rainfall and if the recommended maximum is set at 20 Kg SO4-2 ha-1.
what is the molecular formula and empirical formula of NH2Cl, molar mass = 51.5 g/mol
What are five general properties of aqueous acids? Name some common substances that have one or more of these properties.
Use bond enthalpies to estimate the enthalpy change for the following gas-phase reaction.
For the titration of 50.0 mL of 0.020 M aqueous salicylic acid with 0.020 M KOH(aq), calculate the pH after the addition of 55.0 mL of KOH(aq). For salycylic acid, pKa = 2.97.
calculate the IHD and select all the types of unsaturation that might be present in the molecule based on the IHD.
Calculate the value of q, w, delta E , for the reversible isothermal expansion at 300k of 2.00 mol of a perfect gas
When we go down a group, electron affinity should become more positive (less energy released), since the electron is added at increasing distances from the nucleus.
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