Question

the oxidation state of cobalt ion in complex(co(nh3)5br)so4 is ​

Answer 1

Answer:

the oxidation state of cobalt ion is +3.

Explanation:

Co = x

NH3 = 0

Br = -1

SO4 = -2

Overall charge is 0.

Therefore,

x + 0(5) + (-1) + -2 = 0

x + 0 -1 -2 = 0

x = +3

Answer 2

We need to find the oxidation state of Cobalt ion in the complex, [Co(NH₃)₅Br]SO₄

solution : we know, sulphate ion has charge -2

i.e., SO₄²¯

then, [Co(NH₃)₅Br]²⁺

oxidation state of NH₃ = 0

oxidation state of Br = -1

let oxidation state of Cobalt ion is x

then, x + (3 × 0) × 5 + (-1) = +2

⇒x - 1 = +2

⇒x = +3

Therefore the oxidation state of Cobalt ion is +3.

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