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2. Oxalic acid is a diprotic acid with the following deprotonation equilibria.
A. You have 150 ml of a solution of pure oxalic acid with an unknown concentration. You add known amounts of solid NaOH and measure the pH of the solution, with the results shown in the table. Plot these values as a titration curve. You can provide this either as a manual graph on graph paper or by using a graphing program. Graphs done manually on regular lined paper will not be accepted. On your graph indicate the position of where the concentration of [-OOC-COOH] = [-OOC-COO-]
B. Based on the results of the titration, what is the starting concentration of oxalic acid? Show your work.
C. What is the net average charge/molecule at pH 4.75? Show your work.
The mass of a photon with a wavelength equal to 1.54 x 10 -8 cm is: (1) 0.8268 x 10 -34 kg (2) 1.287 x10 -33 kg (3)1.4285x 10 -32 k
what is the function of detectors in hplc?
If change in energy (ΔE) = 3x 10 -8 j, h= 6.64x 10 -34 j-s and c= 3x 10 8 m/s then wavelength of the light is: (1) 6.36x 10 3 Å (2) 6.36x 10 5 Å
merits
Bohr model of an atom could not account for : (1) Emission spectrum (2) Absorption spectrum (3) Line spectrum of hydrogen (4)Fine spectrum Ans: Fine spectrum
The amount of energy needed to convert one mole of solid substance to vapor state is known as Sublimation energy
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WHY WE CALCULATE GERM OIL ACIDITY OF WHEAT FLOUR?
Organometallic compounds Organic compounds where a metal molecule is directly associated to carbon or organic compounds which consist of at least one carbon-metal bond are know
difference between organic & inorganic colloides ?
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