Na2CO3+2HCl->2NaCl+H20+CO2
0,1
nNa2CO3=10,6/106=0,1mol
mhcl=36,5.200/100=73g
nHCl=73/36,5=2mol
Lap ti le 0,1/1 : 2/2= 0,1<1
Vậy na2co3 het, hcl dư
b.nco2=0,1mol=>V
c.mNaCl=0,2.58,5=11,7g
mdd nacl=10,6+200-0,1.44=206,2g
C%=..
nHCl dư=2-0,2=1,8mol
mHcl du= 1,8.36,5=65,7g
C%...
d...