2nacl+h2so4=na2so4+2hcl
Folosim ca unitate de masura molii.
Obtinem urm. ecuatie:
2/4=1/x;x=2 moli H2SO4.
Folosind urm. formula transformam molii in grame;
m=n*M=2*98=196 g
Pt a afla nr de moli de sare[na2so4] avem urm. ecuatie;
2/4=1/x;x=2 moli na2so4
m=n*M=2*142=284 g
M H2so4=98 g
M na2so4= 142 g