Question

Find the oxidation state of
i. sulphur in H2SO4
ii. bromine in BrO3-
iii. Phosphorus in H3PO3
iv. Vanadium in V2O5​

Answer 1

Answer:

(i) H₂SO₄

Let, the oxid. state of Sulphur be 'x'

⇒x+2(+1)+4(–2)=0

⇒x+2–8=0

⇒x–6=0

∴ x = + 6

(ii) BrO¯

Let, the oxid. state of Bromine be 'x'

⇒x+(–2)= –1

⇒x–2 = –1

⇒x=2–1

∴ x = + 1

(iii) H₃PO₃

Let, the oxid. state of Phosphorus be 'x'

⇒x+3(+1)+3(–2)=0

⇒x+3–6=0

⇒x–3=0

∴ x = + 3

(iv) V₂O₅

Let, thw oxid. state of Vanadium be 'x'

⇒2(x)+5(–2)=0

⇒2x–10=0

⇒2x=10

∴ x = + 5