Question

= O SIMPLE REACTIONS Assigning oxidation numbers Some chemical reactants are listed in the table below. Complete the table by filling in the oxidation state of the highlighted atom. species oxidation state of highlighted atom SiO2(0) CuO(s) O Cu²+ (09) H,00 x 5

Answer 1

Comment in case of any doubt.

To identify the onidation state, we must remember commonly occurring onication states of some generally occurring elements as components like C, H, O, N, etc. H has td, oo-2, cettes etc. Also, het charge on.compound = sum of onidation 1 indicates physical state solid states of constituent . 1 atoms =) In siars), which has tsi and ao atoms, - o.s. of sit ax Onidation state of o= . net charge is (using for simplicity as ию оп short form of oxidation stale) , compound 5) O.S. - 0 - 2x1) = +4) # In C4₂ O(s) : 2x o.s. ofly +1X(-2) = 0 1 ) O.s of au= (+17 . (o.s. of onggen - Onygen atom in formula # Cutt(09): PK OS. Of Cu = +2 =) O.s of Cu = 43] - charge H2O H): 2x0.5.of H + 1x Dis of = 0 tế) (Bỉ) = 0.s. 0% 0 = 0- 2x/+)= [2]