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With a solution in them connected by a liquid salt bridge junction filled with KNO3. In one solution you have a graphite electrode that is connected with a wire to a copper electrode in the second soution. The soution in contact with the graphite electrode consists of dissolved Sn(NO3)2. The solution in contact with the copper electrode consists of dissolved CuNO3.
a) write the standard half cell reduction reaction equation for each solution?
b) what are the standard half cell potentials; E anode and E cathode?
c) If the electrochemical cell is allowed to operate as a gavanic cell, which solution species will be oxidized, which solution species will reduce?
d) write the sybolic representation for the galvanic cell.
e) what would "standard conditions" for this galvanic cell be?
f) If the cell is at standard conditions, determine the cell potential(E cell).
If 3.93 g of sodium borohydride contains 2.5 × 10e23 H atoms, how many moles of H are present in 33 cm3 of sodium borohydride (of density 1.074 g/cm3)?
Solutions A and B are separated by a semipermeable membrane that is permeable to K+, but not Cl-. Initially, Solution A is 0.5 L of 100 mM KCl, and Solution B is 0.5 L of 1 mM KCl.
Silver chloride, often used in silver plating, contains 75.27% Ag by mass. Calculate the mass of silver chloride required to plate 155 mg of pure silver.
mercury nanometer contains 2 g of Ar. A burner heats it to Pext. at 760 torr. What is the Temperature of the gas in the bulb when the total volume is 3 L and H=76mm
A 250.0-mL sample of ammonia, NH3(g), exerts a pressure of 833 torr at 42.4 C. What mass of ammonia is in the container?
Calculate the molality of the solution and the 95% CL, and write the final result with correct format.
What is the volume of a 2.3M NaOH solution required to titrate 23.5 mL of a 1.00 M H2SO4 solution? First write a balanced chemical equation
A solution of hydrochloric acid has a concentration of 12.8 mol/L. However, a chemistry professor needs HCl(aq) with a concentration of 0.100 mol/L for an experiment with his students.
Suppose in the lab you measure 0.3951 g of NaOH and dissolve it into 100.0 mL of water. You then measure 0.1985 g of KHP and place it in a clean, dry 100-mL beaker, and then dissolve the KHP in about 25 mL of water and add a couple of drops of phe..
Draw the Lewis structure of nitramide with a single bond between the two nitrogen atoms and include formal charges. Are there any resonance structures? If so, please draw these too. Describe the hybridization of the nitrogen atoms.
Leucine is an essential amino acid with the systematic name 2-amino-3-methylpentanoic acid. It has pKa1=2.36 and pKa2=9.60
The disappearance of X is monitored at timed intervals. Assume that temperature and volume are kept constant. The data obtained are shown in the table below.
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