Odpowiedź: zad.1--> n=15moli zad.2-->2 ,28dm3
1.
2NaOH + H2SO4--> Na2SO4 + 2H2O
M H2SO4=2g/mol + 32g/mol +4*16g/molg/mol = 98 g/mol
M Na2SO4 = 2*23g/mol +32g/mol + 4*16g/mol = 126g/mol
15moli H2SO4 = 15*98g/mol=1470g/mol
98g-------128g
1470g --- x
x= 128g*1470g/98g
x=1920g
ile to moli Na2SO4:
n= 1920g/126g/mol=15 moli
2. 2mole 22,4dm3
2 Na+2HCl --> 2NaCl + H2
2,5mola x
2moli HCl ----22,4dm3 H2
2,5moli HCl -- x
X =28dm3