Question

1200 kg de carbune de puritate 81% se trateaza cu acid sulfuric.sa se afle: a) cantitarea de co2 care se degaja. b) masa solutiei de h2so4 25% necesara in reactie c+2h2so4 => co2+2so2+2h2o

Answer 1

puritatea = p% = mp x 100 / mip

=> mp = mip x p% / 100

=> 1200x81/100 = 972 g C

972kg... md............ n kmoli

C + 2H2SO4=>CO2 + 2SO2 + 2H2O

12.... 2x98...........1

a) n = 972 x 1 / 12 = 81 kmoli CO2

n = masa / M.molec

=> masa = n x M.molec = 81 x 44

=> m = 3564 kg CO2

b)

md = 972x2x98/12 = 15876 kg H2SO4

=> c% = mdx100/ms

=> ms = mdx100/c%

=> ms = 15876x100/25 = 63504 kg sol H2SO4