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Problem- You have constructed a quinhydrone concentration cell with buffers of pH = 5.5 and pH = 3.0 according to the following notation: C(s, graphite) | pH 5.5 buffer, quinhydrone || pH 3.0 buffer, quinhydrone | C (s, graphite). Using the Nernst equation as derived in the Chemical Foundations section for the quinhydrone concentration cell, calculate the cell potential for this electrochemical cell.
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Hypochlorous acid, HOCl, is a weak monoprotic acid. Using the information for this acid in Appendix F, calculate the pH (round to one decimal) and the percent ionization _2 _(round to two decimals) of a 0.1M solution of the acid at 250C.
Patients suffering from respiratory disorders are often treated in oxygen tents in which the atmosphere is enriched in oxygen. What is the partial pressure of O2 in an oxygen tent consisting of 45% O2 for an atmospheric pressure of 753 mm Hg?
chlorine has two stable isotopes of mass 34.97 u and 36.97 u.suppose the percent abundance of the lighter isotope were
Like many ATP-dependant enzymes, the ATP synthase can be "run in reverse" by providing the enzyme with ATP. If the ATP synthase was reversed while inside the mitochondrion, which of the following would occur?
Bromocresol green, Ka = 2.0x10^-5, is yellow in its protonated form (HX) and blue in its ionized form (X^-). At what pH will bromocresol green be a perfect green color
Calculate the difference in pH when 4.01 g of NaClO is added to 364.8 mL of 0.50 M HClO. Ignore any changes in volume.
Determine the pH of the acid solution before the titration begins and the pH at the equivalence point when 50.0 mL of the NaOH has been added. The Ka of HF is 7.2*10^-4
Calculate Delta H for the process. Given u ={(2a/RT) - b}/Cp,m; with Cp,m = 38.4j/K.mol; a=3.60dm6 atm and b= 0.44 dm3.mol.
A sample of ethane vapor is added to the same flask until the total pressure is 1.45 atm . What is the partial pressure of argon,PAr , in the flask?
Mark the True statement A. In carbon containing compounds, carbon usually forms four bonds, nitrogen usually forms three bonds, oxygen usually forms two bonds, and hydrogen only forms one bond.
Utilizing the Rydberg Equation to calculate the wavelength in Angstroms of the photon absorbed when a hydrogen atom undergoes a transition from n=5 to n=7.
A 0.8800 g sample of a carbocyli acid is burned in oxygen, producing 1.569 g of CO2 as well as 0.6459 g of H2O. Find out the empirical formula of arboxylic acid
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