Question

la sinteza amoniacului s-au consumat 18 g H. Determinati volumul de NH3 si nr de moli de N consumat

Answer 1

    yg        18g         xg

    N2 + 3H2 = 2NH3

  2 .14g  3.2g     2.17

x=18. 2. 17: 3 .2=102 g NH3

n=nr. moli

n=m:M

n=102g : 17 g/moli=6moli NH3

VNH3=6 moli .22,4 litri/mol

        =134,4 litri NH3

y=14 .2 .18 : 3 .2=84 g azot

n=m:M= 84g:28g/mol=3 moli azot

MNH3=14 +3=17----->1mol=17g

MN2=2 .14=28 ------->1mol=28g