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Problem- Tarnish on copper is the compound CuO. A tarnished copper plate is placed in an aluminum pan of boiling water. When enough salt is added so that the solution conducts electricity, the tarnish disappears. Imagine that the two halves of this redox reaction were separated and connected with a wire and a salt bridge.
Calculate the standard cell potential given the following standard reduction potentials
Al3++3e-?Al; E?=?1.66 V
Cu2++2e-?Cu; E?=0.340 V
Explain each and every step in detail. I need proficient help in the above problems.
a student placed 15.0 g of glucose c6h1206 in a volumetric flask added enough water to dissolve the glucose by swirling
explain Why this separation occur and which solvent will be on top - the temperature of twenty degree Celsius. When hexane is added with H 2 O, there is a separation
Calculate the volume of carbon dioxide at 20.0C and .950 atm produced from the complete combustion of 2.50 kg of methane. Compare your result with the volume of CO2 produced from the complete combustion of 2.50kg of propane (C3H8)
Determine the average atomic mass of boron is the natural abundance of 10B weighing exactly 10.0129 amu is 80.1% and the natural abundance of 11B weighing exactly 11.0093 amu is 19.9%.
If you have 1 gram of (-) ethyl lactate and purify it with an enantiomeric excess of 85% yields, wihout any loss of material. How many grams of the (+) enantiomer were separated?
If a formic acid/formate buffer is 0.031 M in formic acid and has a pH of 3.91, what is the molar concentration of the formate ion? The pKa of formic acid is 3.75.
A sample of N2O3 contains 1.26 moles of nitrogen. Use the following atomic masses: N =14, O=16.
Problem- What molar ratio of acetic acid to sodium acetate is required to create a buffer solution having a ph of 4.80 at25C? Ka forHC2H3o2 is 1.8*10^-5
5.00 mL of a 7.5x10^-3 M solution of HNO3 is diluted to 200. mL. What is the pH of the resulting solution
Calculate the molarity of the solution when 5.396 g of sodium chloride are added to water in order to make a 2.00 L solution. The molarity of NaCl in the solution
explain why it is dangerous to mix solutions in a test tube by placing a finger
what fators are generally responsible for the variaion in the base strength of nitrogen
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