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a. Does the iron in the Fe(NH4)2SO4 solutions function as an oxidizing agent or a reducing agent? Explain please
b. Magnesium metal is used as a sacrificial anode to reduce the corrosion of underground storage tanks (made of iron, or more accurately, steel which is an iron/carbon alloy). As a result the sacrificial metal corrodes instead of the iron. Explain the chemistry of the process.
The active ingredient in aspirin is acetylsalicylic acid (HC9H7O4) a monoprotic acid with Ka = 3.3 10-4 at 25°C. What is the pH of a solution obtained by dissolving two extra-strength aspirin tablet
sodium azide, a compound containing only sodium (Na) and Nitrogen (N), is used as a propellant for inflating airbags in some automobiles. A sample of sodium azide was weighed into a crucible.
What is the molarity (mol/L) of a potassium permanganate solution if 14.09 mL of it was used to titrate a 10.00 mL sample
Enough of a monoprotic acid is dissolved in water to produce a 0.0193 M solution. The pH of the resulting solution is 2.42. Calculate the Ka for
A mixture containing 2.37 g each of CH4(g), C2H4(g) and C4H10(g) is contained in a 1.50 L flask at a temperature of 45°C.
The total pressure in a flask containing air and ethanol at 257C is 878 mm Hg. The pressure of the air in the flask at 257C is 762 mm Hg. If the flask is immersed in a water bath at 350C
At 25C, the vapor pressure of diethyl ether is higher than the vapor pressure of its isomer n-butanol. Why?
The element cesium (Cs) freezes at 28.4 degree celsius, and its molar enthalpy of fusion is delta H fusion =2.09kJ/mol. a.) when molten cesium solidifies to Cs (s) at its normal melting point, is delta S positive or negative? b.)calculate the valu..
Draw the structure of the compound that is consistent with the 1H NMR data below. (Assume that long-range coupling is not observed.)
Use the thermodynamic data in Appendix B to calculate the standard cell potential and the equilibrium constant at 25°C for the cell reaction in a direct methanol fuel cell
A 25ml solution of quinine was titrated with 1.00 M hydrochloric acid, HCl. It was found that the soluiton contained 0.125 moles of quinine. What was the pH of the solution after 50 ml of the HCl solution were added? Quinine is monobasic with pKb=..
What would you expect to happen if you combined 10.0mL of 10^-2 M acetic acid and 5.0mL of 10^-2 M sodium hydroxide? What would be the concentrations of acetic acid and sodium acetate in this solution
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