Question

Pentru 10 kilomoli de: So2,NH3,H2SO4,Ca(OH)2 se cere:
a)N=?
b)m=?

Answer 1

n= m : M      ;    n=nr.moli       m=masa subst.      M=masa molara[ g/moli]

10kmoli SO2

MSO2=32+2.16=64----->64g/moli

n=10000 moli SO2

m=n.M

m=10000 moli. 64g/moli=640000g=640kg SO2

10kmoli NH3

n=10000 moli NH3

MNH3=14+3=17 ------>17g/moli

m=10000 moli .17g/moli=170000g=170kg NH3

10kmoli H2SO4

n=10000 moli H2SO4

MH2SO4=2+32+4.16=98---->98g/moli

m=10000moli . 98g/moli=980000g=980 kg H2SO4

10kmoli Ca(OH)2

n=10000 g Ca(OH)2

MCa(OH)2=40+2.16 +2=74----->74g/moli

m=10000moli .74g/moli=740000g=740kg Ca(OH)2