Question

Determine o nox do C no : a)H2CO3 , b)CO3 2- ,c)HCO 3- , d)C2H6 , e)C2H4 , f)C2H2 .

Answer 1

$H_{2} CO _{3}$
2.1 + C + 3 (-2) = 0
C = 4

$CO_{3} ^{2-}$
C + 3 (-2) = -2
C = 6 - 2
C = 4

$HCO_{3} ^{2-}$
1+ C + 3 (-2) = -2
C = 5 - 2
C = 3

$C_{2} H_{6}$
2C + 6(-1) = 0
C = +3

$C_{2} H_{4}$
2C + 4(-1) = 0
C = +2

$C_{2} H_{2}$
2C + 2(-1) = 0
C = +1