P1 + NaOH: chỉ NaHCO3 p/ư
gọi nNa2SO4 = b
NaHCO3 + NaOH -> Na2CO3 + H2O
0.03 0.03
P2 + HCl dư: nCO2 = 0.1 mol
NaHCO3 + HCl -> NaCl + H2O + CO2
0.06 0.06
Na2CO3 + 2HCl -> 2NaCl + H2O + CO2
0.04 0.04
P3 + Ba(OH)dư:
gọi nNaHCO3 = 0.03k và nNa2CO3 = 0.02k, nNa2SO4 = bk.
Ba(OH)2 + 2NaHCO3 -> BaCO3 + Na2CO3 + H2O
0.015k 0.03k 0.015k
Na2CO3 + Ba(OH)2 -> 2NaOH + BaCO3
0.035k 0.035k
Na2SO4+ Ba(OH)2 -> 2NaOH + BaSO4
bk bk
=> 0.05k + bk = 0.3
48.48 = P1 + P2 + P3 = 3P1 + P3
= (k+3) x (0.02 x 106 + 0.03 x 84 + 142b)
