An aqueous solution of bismuth nitrate (Bi(NO3)3) was electrolyzed until 28 grams of metallic bismuth was plated out at the cathode. How many Faradays of electricity must have passed through the cell?
An aqueous solution of bismuth nitrate (Bi(NO3)3) was electrolyzed until 28 grams of metallic bismuth was...
019 10.0 points An aqueous solution of bismuth nitrate (Bi(NO3)3) was electrolyzed until 28 grams of metallic bismuth was plated out at the cath- ode. How many Faradays of electricity must have passed through the cell?
#6,7,8,9 6. Bismuth nitrate, Bi(NO3)2, is used in the production of some luminous paints. How many grams of pure bismuth are in a 268 g sample of bismuth nitrate? 7. A 5.00 g sample of borax, Na2B.07.10H2O, was thoroughly heated to remove all of the water of hydration. What mass of anhydrous sodium tetraborate remained? 8. What mass of water is present in 25.0 g of magnesium chloride dihydrate? 9. What mass of manganese is present in 5.00 g of...
5- An aqueous Ti(NO3)3 solution was electrolyzed for 45 min to deposit 6.18 grams of Titanium. What is the constant current (in Amps) used in this electrolysis? (molar mass of Ti = 47.87 g/mol, Faraday Cte = 96,485 C/mole e")
An aqueous Snl, solution is electrolyzed under 1 bar pressure using platinum electrodes. (a) Write the half-reactions predicted to occur at the anode and cathode, based on the standard cell potentials given below. Standard Reduction Potentials (Volts) at 25°C 12(s) +2 — 21'(aq) 0.535 O2(g) + 4 H30* (aq) + 4 —6H20(1) 1.229 2 H20(1) + 2 € H2(g) + 2 OH'(aq) -0.828 Sn²+(aq) +2 € + Sn(s) -0.140 Half-reaction at anode: Half-reaction at cathode: (b) What is the expected...
part 1) An aqueous solution of magnesium nitrate, Mg(NO3)2, contains 2.03 grams of magnesium nitrate and 17.8 grams of water. The percentage by mass of magnesium nitrate in the solution is %. part 2) The mole fraction of lead acetate, Pb(CH3COO)2, in an aqueous solution is 1.80×10-2 . The percent by mass of lead acetate in the solution is %. part 3) An aqueous solution is 40.0 % by mass potassium bromide, KBr, and has a density of 1.37 g/mL. The mole...
a) A current of 5.11 A is passed through a Cr(NO3)2 solution. How long, in hours, would this current have to be applied to plate out 6.10 g of chromium? b) A current of 3.51 A is passed through a Sn(NO3)2 solution for 1.20 h. How much tin, in grams, is plated out of the solution?
How many grams of lead nitrate, Pb(NO3)2, are required to make a 7.06 % w/v aqueous solution in a 50.0 mL volumetric flask? in grams
Chromium often is electroplated on other metals and even plastics to produce a shiny metallic appearance. How many grams of chromium would plate out from a solution of Cr(NO3)3 when 10.0 amps of current are passed through the electrolytic cell for 8.45 hours? Answer: Check
An electrochemical cell consists of two silver electrodes placed in aqueous solution of silver nitrate. The positive electrode is called anode, whereas the negative electrode is called cathode. A constant current of 0.5 A is passed through the cell for 1 hour. a) What is the total charge q transported through the cell? b) If one electron is needed to discharge one positively charged silver ion (that is, to neutralize the ion and deposit it on the cathode), how many...
1- A current of 3.59 A is passed through a Cr(NO3)2 solution for 1.30 hours. How much chromium is plated out of the solution? 2-A current of 4.87 A is passed through a Sn(NO3)2 solution. How long (in hours) would this current have to be applied to plate out 7.30 g of tin?