in an electrolysis bath for 24 minutes with a current of 6.5 Amps, how many grams of zinc will be plated out? the molecular weight of Zn is 65.38, and Zn+²+2e-→Zn.,,...,,-A: 6.34g of Zn B: 3.17g of Zn C: 12.68g of Zn D: 1.09g Zn

the answer is c

tell me if wrong

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