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Assume you dissolve 0.235 g of the weak acid benzoic acid, C6H5CO2H in enough water to make 100 mL of solution and then titrate the solution with 0.108 M NaOH. C6H5CO2H + OH- --> C6H5CO2- + H2)
a. what was the pH of the origianl benzoic acid solution?
b. What are the concentrations of all of the following ions at the equivalecne point: Na+, H3O+, OH-, and C5H5CO2-?
c. What is the pH of the solution at the equivalence point?
Upon reaction with excess sulfamic acid, HSO3NH2, a 0.121g sample of a mixture of sodium nitrite, NaNO2, and sodium chloride, NaCl, produced 28.3 mL of nitrogen gas collected over water at 25.3 degrees Celsius and at a barometric pressure of 738 m..
Converting Voltages, Convert the following voltages. Assume the silver-silver chloride and calomel reference electrodes are saturated with KCl, giving cell potentials of +0.197 V and +0.241, respectively.
Which of the following best describes carbon dioxide (CO2) at room temperature and pressure A) polar molecular gas B) nonpolar molecular gas C) covalent network solid D) ionic solid E)metallic solid An explanation of why would be great too
How many mL of a 45.0%(m/v) solution of NaCl would you need in order to have 12.0g of NaCl? Molar mass of NaCl is 58.54g/molhow many mL of a 45.0%(m/v) solution of NaCl would you need in order to have 12.0g of NaCl
Using 80.0g of Methane and 16.3g of Water, how many liters of H2 can be produced at STP? What is the limiting reactant?
A 245 mL stock solution contains 2.3 M Ca(CN)2. When 100 mL of the stock solution is diluted to 120 mL, how many moles of CN- ions will be contained in the dilute solution?
Hydrogen peroxide decomposes to water and oxygen, and the activation energy for this process is 42 kJ/mol. The hydrogen peroxide formed in the biological process is harmful to tissue
100 mL of 0.06 M TRIS hydrochloride (C4H12ClNO3) is titrated with 1.0 M sodium hydroxide (NaOH). The titration curve is shown. What is the approximate pKa
Methanol, CH3OH, a colorless, volatile liquid, was formerly known as wood alcohol. It boils at 65.0°C and has a heat of vaporization of 37.4 kJ/mol. What is its vapor pressure at 22.0°C
Prepare 1.00L of a pH~12 buffer with a total phosphate concentration of 0.050 M.You have at your disposal the following compounds
What is the osmotic pressure, in atm, of a solution formed by dissolving 17.2 g of AlCl3 in 0.588 L of water at 57.4 oC? (R = 0.0821 L-atm/mol-K; 0 oC = 273 K)
What is the particular advantage to know the penetration depth of X-rays impinging upon the sample when performing XPS analysis.
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