Question

Stabiliti coeficientii in urmatoarele ecuatii chimice ,cititi aceste ecuatii si precizati felul fiecarei substante :
N2+O2=NO
SO2 +O2=SO3
Fe+HCl=FeCl2+H2^

Answer 1

N2+O2=2NO
2SO2 +O2=2SO3
Fe+2HCl=FeCl2+H2^

Answer 2

 $Fe+2HCl=\ \textgreater \ FeCl_{2}+H_{2}$

$2SO_{2}+O_{2}=\ \textgreater \ 2SO_{3}$

[tex] N_{2} + O_{2} =\ \textgreater \ 2NO [/tex]

$N_{2}$ azot , substanta elementara

$O_{2}$ oxigen, substanta elementara

$SO_{2}$ dioxid de sulf

NO monoxid de azot

$SO_{3}$ trioxid de sulf

Fe fer, metal, substanta elementara

HCl acid clorhidric

$FeCl_{2}$ clorura de fer ( II) , sare

$H_{2}$ hidrogen, substanta elementara