(C2H5)2NH + CH3-СН2-Cl = (С2Н5)3-N + HCl
2NaOH+H2SO4=Na2SO4+2H2O
n=m/M
n(NaOH)=16/40=0.4
n(NaOH):n(H2SO4)
2:1
n(H2SO4)=0.2
m=n*N
m(H2SO4)=0.2*98=19.6гр
m(р-ра)(H2SO4)=19.6*100%/10%=196г
V=m/p
V(H2SO4)=196/1.07=183.18см³
K2CO3+2HNO3=2KNO3+H2O+CO2
m(K2CO3)=250*14%=35г
V(ню) K2CO3=35/138=0.25моль
V K2CO3=V CO2=0.25моль
V(объем CO2)=0.25*22.4=5.6 л