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Question- The dibasic compound B (pKb1 = 4.00, pKb2 = 8.00) was titrated with 1.00 M HCl. The initial solution of B was 0.100 M and had a volume of 100.0 mL. Find the pH after 3.7 mL of acid are added.
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Potassium carbonate should not be used as a drying agent for some organic compounds would it be better for use in drying an ether solution containing an acid RCOOH or a base RNH2 and why
A solution of 0.2113 g of water dissolved in 25.0 g of a solvent freezes at 11.5 °C below the freezing point of the solvent. What is Kf for this solvent?
Problem- The delta H of the rate determining step of an Sn1 reaction should be negative, positive, or zero? Why?
Assume an organic compound has a partition coefficient between water and diethyl ether equal to 9.00. If there are initially 5.00 grams of the compound dissolved in 100.0 mL of water,
Aerosol cans have a label that warns the user not to use them above a certain temperature and not to dispose of them by incineration. Even an empty can contains residual gaseous propellant
Then you precipitate the calcium ion in solution by adding sodium oxalate Na2C2O4. The precipitate is calcium oxalate, CaC2O4. You find that a sample of limestone weighing 128.3 mg gives 140.2 mg of CaC2O4. What is the mass % of calcium in the lim..
An aqueous antifreeze solution is 40.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.05 g/cm3. Calculate the molality, molarity, and mole fraction of the ethylene glycol.
The Conversion of 2 pyruvate to 1 glucose by gluconeogenesis high energy phosphate bonds- a. Uses four. B. Uses six. C. Produce two D, produces one E, none of these.
A substance containing 28.84% Nitrogen, 0.0648g Hydrogen, and Oxygen and Carbon, with (total) mass (of the substance) 1.2953, is burned in excess oxygen to produce 2.241 grams of carbon dioxide.
85.2 g sample of compound X4O10 contains 48.0 g of oxygen atoms. what is the molar mass of element x
A Power plant is the main point source of SO2 emissions for a 25 km2 area. Estimate the steady-state concentration of SO2 for this area from this point source given the following temperature data. Windspeed= 5km/hr.
Determine each of the following for a 0.500 M HBr solution. 1) Express your answer using three significant figures [H3O+]= M 2) Express your answer using three decimal places pH= 3)the balanced equation when reacted with LiOH.
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