Question

Ajutoor
va rog ambele probleme dau coroana urgent este vă rog coreect

Answer 1

3.

V L ................ 89,6 L

Cl2 + H2 => 2HCl

22,4 .............2x22,4

=> V = 22,4x89,6/2x22,4 = 49,3 L Cl2

854 ml apa = 854 g apa (apa are p = 1,0 g/ml)

masa/M.molec. = V / Vm

=> masa = md = M.molec. x V / Vm

= 36,5x89,6/22,4 = 146 g

=> ms = m.apa + md = 854 + 146 = 1000 g sol HCl

stim ca c% = mdx100/ms = 146x100/1000

= 14,6%

4.

1 m3 ..... a L ...... b L

CH4 + 2O2 => CO2 + 2H2O

22,4 ..2x22,4....22,4

=> a = 1x22,4x2/22,4 = 2 L O2

=> b = 22,4x1/22,4 = 1 L CO2