Se la schema:
a+ b - NaOH
d + b - NaOH + H2
AlCl3+NaOH-e+f
NaOH + H2SO4 - h + b
f+ H2SO4 - i + b
f-j+b
CO2+NaOH-k+b
NaOH+l-e+b
a,b,d,e,f,h,i,j,k,l=?​