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Ag(s) | AgCl(s) | KCl (aq, saturated) || cell solution | Cu(s) The cell solution was made by mixing 25.0 mL of 4.00 mM KCN 25.0 mL of 4.00 mM KCu(CN)2 25.0 mL of 0.400 M acid, HA, with pKa=9.50 25.0 mL of KOH solution The measured voltage was -0.440V. Calculate the molarity of the KOH solution. Assume that essentially all copper (I) is Cu(CN)2-. A little HCN comes from the reaction of KCN with HA. Neglect the small amount of HA consumed by reaction with HCN. For the right half-cell, the reaction is Cu(CN)2- + e- ↔ Cu (s) + 2CN-.
Give the systematic names for the formulas, or the formulas for the names. (The format copper(II) chloride for CuCl2, and using the format CO2 for CO2. Omit the centered dot for hydrates.)
Propose a structure for the hydrocarbon that gives the following products on oxidative cleavage by KMnO4 or ozone.
2ch3oh3o2 gives 2co24h2o. calculate the heat of combustion of one mole of methanol under standard
They then add 5 ml of a 20 ppm toluene to 5 ml of the unknown solution and relative signals of 1240:1100. What is the concentration in ppm of the benzene
Problem- 15.0 moles of gas are in a 3.00L tank at 21.8?C. Calculate the difference in pressure between methane and an ideal gas under these conditions. The van der Waals constants for methane are a=2.300L2?atm/mol2 and b=0.0430 L/mol.
A dry-cleaning solvent (molecular weight = 146.99 g/mol) that contains C, H, and Cl is suspected to be a cancer-causing agent. When a 0.299 g sample was studied by combustion analysis, 0.537 g of CO2 and 0.0727 g of H2O formed.
Explain which of these compounds are soluble in water. For any that are, provide the ions that are released into solution
in order to create an engineered human hemoglobin molecule that had the same bicarbonate binding properties as
The concentration of Mg2+ in seawater is 0.052 M. At what pH will 86% of the Mg2+ be precipitated as the hydroxide salt? [Ksp for Mg(OH)2 = 8.9 10-12.]
Depict the skeletal structure of the major product produced when 1 equivalent of Br2 reacts with p-dipropylbenzene in the presence of FeBr3.
Find the specific heat of an unknown metal if a 35.5 gram sample at 99.6 degrees Celsius produced a resulting temperature of 26.1 degrees Celsius when placed in a calorimeter containing 100.5 grams of water at 20.2 degrees Celsius.
Which of the following statements is/are correct. i. KBr, HClO3, and HClO2 are strong acids ii. NaH, KOH, and Li2O are strong bases iii. HI, HClO3, and HNO3 are strong acids
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