Question

Sulful arde in 2,41 litri Oxigen
a. Ce masa de sulf reactioneaza cu oxigenul>?
b.Cate molecule de SOH rezulta din reactie.?

Answer 1

S+O₂=SO₂
a) 1mol O₂....................22,4l
xmoli........................2,41l
x=2,41/22,4=0,1 moli O₂
1mol O₂......................32g
0,1moli.......................y
y=0,1·32=3,2g O₂
z=masa de sulf
z=32·3,2/32=3,2g S

b)Masa atomica SO₂=64g
q=masa de SO₂
q=3,2·64/32=6.4moli SO₂
1molSO₂..............................64g
w moli...................................6,4g
w=6,4/64=0,1 moli SO₂
1mol.................................3·6,023·10²³
0,1 moli............................e
e=0,1·3·6,023·10²³=1,8069·10²³ molecule SO₂