Question

Ajutor! Dau coroana! 20pct

Answer 1

     
            5,85g       xg                                Y
             2  NaCl +H2SO4 =Na2 SO4 +2HCl
             2.58,5g    98 g                          2.36,5g

x=5,85.98:2.58,5=4,9 g H2SO4

H2SO4 ESTE IN EXCES(19,6-4,9=14,7)






MNaCl=23+35,5=58,5
MH2SO4=2+32+4.16=98
MHCl=1+35,5=36,5

y=5,85.2.36,5:2.58,5=3,65 g HCl
36,5g HCl------1mol HCl
3,65g--------------z moliHCl
z=3,65:36,5=0,01 moliHCl

V=22,4.0,01=0,224 litri HCl