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Stock Solution: 0.2 M NaH2PO4, 0.2 M Na2HPO4. Both of them are mixed to get a buffer. The pKa is 6.8. Calculate volumes of both solutions required to prepare 150mL 0.1M phosphate buffer at pH 7.4
A detailed mechanism for the formation of ethyl acetate from ethanol as well as acetic acid with H2SO4 as catalyst
Question- At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.70. What is the Ksp of the salt at 22°C.
When 0.231g of phosphorus reacts with chlorine to form phosphorus trichloride, in a coffee cup calorimeter of heat capacity 216J/degreeC, the temperature of the calorimeter rises by 11.06C
A compound of forumula C14H12 gave a positive Baeyer test and burned with a yellow, sooty flame. Treatment with ozone followed by hydrolysis in the presence of zinc gave formaldehyde as one of the products.
Question- How much work must be done on a system to decrease its volume from 11.0 L to 4.0 L by exerting a constant pressure of 5.0 atm
The activation energy for the formation of HCl from its elements: H2 (g) + Cl2 (g) → 2 HCl(g) is 155 kJ mol-1. How much faster will this reaction occur at 200°C versus at 100°C?
A student determined the following percent transmittances for a 0.5 M chromium ion solution using a spectronic 20 spectophometer. which wave length has the greatest absorbance
Calculate the pH when 2.00 mL of 0.0275 M NaOH are added to 50.0 mL of buffer solution.
Compute the mass of CO2 produced in the combustion of 15 gallons of gasoline. Presume that gasoline consists of octane (C8H18), and has a density of 2.65 kg/gallon.
what are the freezing point and boiling point of 0.20 m glycerol in ethanol?what is the freezing point of 2.04 g kbr
A. Liquids have very strong attractive forces holding them together B. Liquids have moderately strong attractive forces holding them together C. Liquids have very weak attractive forces holding them together.
Calculate the pH of the above solution if 1.00 moles of benzoic acid and .97 moles of Sodium Benzoate are added in enough water to make 750ml of solution
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