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what is the pH of the benzoic acid solution prior to adding sodium benzoate? B. how many grams of sodium benzoate should be added to prepare the buffer? neglect the small volume change that occurs w
What is the hydroxide-ion concentration of a 0.190 M oxalic acid, H2C2O4, solution? For oxalic acid, Ka1 = 5.6x10-2 and Ka2 = 5.1x10-5.
Magnesium metal is used as a sacrificial anode to reduce the corrosion of underground storage tanks (made of iron, more accurately steel). As a result the sacrifical metal corrodes instead of iron.
Does the iron in the Fe(NH4)2SO4 solutions function as an oxidizing agent or a reducing agent. Please explain
In PLP catalyzed reactions, the bond broken in the substrate molecule must be perpendicular to the plane of the pyridinium ring. Describe why this arrangement stabilizes the carbanion
During the conversion of glutamine to proline, you have labeled the gamma-carbonyl group of glutamine with 14C. What carbon in the proline product would be labeled
In the electron transport chain, electrons from FADH2 are eventually used to reduce O2 into H2O. Experimentally, the proton motive force created by this process will generate 2 ATP molecules from AD
Write the structural formula of the main organic product for the following reaction between an alcohol, tosyl chloride, and then a nucleophile.
write structures for the various aldol condensation products you expect from the aldol self-condendsation of 2-butanone
Write a mechanism for the reaction of an alkyl halide with alcoholic silver nitrate which depicts the type of substitution occurs.
How many moles of lithium nitrate are theoretically produced if we start with 3.4 moles of Ca(NO3)2 and 2.4 moles of Li3PO4? Reaction: 3Ca(NO3)2 + 2Li3PO4 ? 6LiNO3 + Ca3(PO4)2
One method used to store energy during times of low demand is by pumping water uphill into a reservoir. When energy demand exceeds the output produced by power plants, the water is released, moves d
Write down the secular determinant for the allyl radical, Ch2=CH-Ch2, and estimate the pi-binding energy.
The qualitative analysis scheme contains a vast array of reactions involving precipitation, formation of coordination complexes and oxidation-reduction. Identify each of the following as primarily o
Methanol (CH3OH) can be made by controlled oxidation of methane. CH4(g) 1/2 O2(g) ? CH3OH(g) (a) Calculate ?H° and ?S° for this reaction. (b) Calculate ?G° at 298 K. (c) C
How many liter of ethane, measured at 15 degrees C and 711 torr, must be burned to liberate 2.73 * 10^4 KJ of heat? 2(C2H6) +7(O2) ----> 4(CO2) + 6(H2O) [delta H= -3.12 *10^3]
what is the lewis dot structure of ClO3- add formal charges to the atoms remember that the formal charges will add up to the ion charge
What is the lewis dot structure of Cl2O add formal charges to the atoms remember that the formal charges will add up to the ion charge
Did an experiment in which we reacted magnesium and bromobenzene to make phenylmagnesium bromide, then added it to CO2 to get benzoic acid.
Determine whether a solid forms when solutions containing the following salts are mixed. If so, write the ionic equation and the net ionic equation. NaF and AgNO3 . Write the ionic equation.
a) what is the total pressure in the reaction vessel b) what is the partial pressure of N2 c) If the volume of the reaction vessel is decreased to 5.0 L, would you expect the pressure of the gases t
If the activation energy for a given compound is found to be 103 kJ/mol, with a frequency factor of 4.0 × 10^13 s^-1, what is the rate constant for this reaction at 398 K
What is the change in internal energy (in J) of a system that releases 675 J of thermal energy to its surroundings and has 5.60 * 10^2 cal of work done on it?
Balance the following redox reaction in acidic solution. State what is being ocidized, what is being reduced and how many electrons are transferred during the reaction.
The following four reactions have standard entropy changes (J/K) at 68oC of 150.7, 20.31, 158.1, and 23.92, respectively. What is the standard entropy change at this temperature for the reaction below