Iron was electrolytically plated onto a platinum gauze electrode from a solution containing 270 g/l feso4·7h2o, 50 g/l hno3, and 6 g/l nacl at –1.3 v vs. ag|agcl.

prior to deposition, the platinum electrode weighed 0.4612 g.

after 13.74 c were passed through the circuit, the elecrode weighed 0.4649 g.

in addition to the reduction of iron, the reduction of h to h2 also occurs during the electrolysis.

what percentage of the current was used in the reduction of iron?

a polar bond is formed when electrons are shared unevenly between atoms

as given the equation is

2al + 6 hcl > 2 alcl3 + 3 h2(g)

as per equation two moles of aluminum reacts with six moles of hcl to give two moles of alcl3 and three moles of hydrogen gas

given: three moles of al are present and 7 moles of hcl

for three moles of aluminum nine moles of hcl will be required

however as 7 moles of hcl are present so the limiting reagent is hcl

hcl is going to decide the number of moles of product formed

when six moles of hcl are present = 3 moles of h2 are formed

when one mole of hcl is present == 3/6 mole sof h2 will be formed

when 7 moles of hcl are present = 3 x 7/ 6 moles of h2 will be formed = 3.5 moles of h2

diaria maybe go see a doctor about that