Calculati raportul atomic,raportul de masa ,compozitia procentuala pentru:HNO2,HS,HCl,HBr,Hi,HF
Răspunsuri la întrebare
HNO2
r.a.= 1 : 1 : 2
r.m.= 1 : 14 : 2.16= 1 : 14 : 32
M=1+14+ 32=47-------> 47g/moli
47g HNO2-----1gH-------14gN-------32g O
100g----------------x----------y------------z
x=100.1 : 47=2,13%H
y=100.14 : 47=29,79%N
z=100.32 : 47=68,08%O
H2S
r.a.=2 : 1
r.m.= 2 : 32=1: 16
M=2 + 32 =34------34g/moli
34g H2S-------2g H----------32g S
100g-----------------x---------------y
x=100.2: 34=5,88%H
y=100.32 : 34=94,12% S
HCl
r.a.=1: 1
r.m.=1 : 35,5
M=1+ 35,5=36,5------> 36,5 g/moli
36,5gHCl-------1g H--------35,5 g Cl
100 g---------------xg-----------yg
x=100.1 : 36,5=2,73% H
y=100.35,5 : 36,5=97,26 % Cl
H Br
r.a.=1: 1
r.m.=1 : 80
M=1+ 80=81------> 81g/moli
81g HBr---------1g H---------80g Br
100g--------------x---------------y
x=100.1 : 81=1,23% H
y=100.80 : 81=98,77% Br
H I si H F ------lucreaza singur dupa model