# How do you determine the oxidation state of C in CO_3 ^(2-)?

Jul 19, 2017

+4 Write an equation using the information and solve for C

#### Explanation:

the equation would be

$1 \times C + 3 \times O = - 2$

$O = - 2$ this is almost alway the oxidation state of Oxygen so

$1 \times C + 3 \times \left(- 2\right) = - 2$ so

$1 \times C + - 6 = - 2$ add +6 to both sides

$C + - 6 + 6 = - 2 + 6$ this gives

$C = + 4$