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  • What is the oxidation number of SO4? - Answers
    Since the SO4-2 ions have two negative charges and oxygen atoms in almost all compounds have two negative charges each, the sulfur atoms have an oxidation number of -2 -4 (-2) = +6
  • What is the chemical name of SO4? - Answers
    The chemical name of SO4 is sulfate Sulfate is a polyatomic ion with a charge of -2, consisting of one sulfur atom bonded to four oxygen atoms It is commonly found in compounds such as sodium
  • How is (SO4)^2- Charged if S and O all are Neutral Themselves?
    There are partial charges on the S and the O in SO4 [2-], the Sulfate ion Sulfate ions are found in sulfuric acid = H2SO4, which ionizes into SO4 [2-] + 2 H+ Oxygen is electro-negative It has a partial negative charge Think of water = H2O, which can break down into H+ and OH- With oxygen pulling the electrons toward itself, the sulfur gets a partial positive charge Sulfur can have either
  • Why (SO4)^2- does not create 4 double bonds - Chemistry Stack Exchange
    Why, in $\ce {SO4^2-}$ don't the 4 oxygens create double bonds In that case the all the oxygens will have 0 formal charge while the sulfur will have -2 In what I've seen only 2 oxygens create double bonds making the sulfur have no formal charge, 2 oxygens have -1 formal charge and 2 others no formal charge
  • Why cant sulphate ion be discharged in the anode of electrolysis?
    Why is $\ce {OH-}$ preferentially discharged over $\ce {SO4^2-}$ in the anode? One explanation I've found is that because $\ce S$ in $\ce {SO4^2-}$ has an oxidation number of $+6$ which is a maximum and thus cannot be oxidized any further
  • Why does Sulfur have 12 valence electrons in the Sulfate ion?
    But how exactly do you calculate the exact number of " $12$ electrons " in the valence electron, which thus allows it to participate in $6$ covalent bonds with oxygen in the sulfate ion, $\ce {SO4^2-}$?
  • What is the empirical formula for aluminum sulfate? - Answers
    The compound with the formula Al2 (SO4)3 is called aluminum sulfate It is composed of two aluminum ions (Al3+) and three sulfate ions (SO4 2-)
  • Why does sulfate have this structure? - Chemistry Stack Exchange
    Look at the structure for sulfate: Why does sulfur form so many covalent bonds Its valency is only $-2$, it only needs two electrons, yet here it's getting $6$ The same thing happens with phosp
  • How to calculate the formal charge of sulfate ion?
    All four $\ce {S-O}$ bonds are equal in length (#2) The length of the $\ce {S-O}$ bonds is shorter than a normal $\ce {S-O}$ single bond and longer than a normal $\ce {S-O}$ double (#1) The sulfur atom has a partial positive charge (#2) (note that partial charges, unlike formal charges, have some experimental basis) The four oxygen atoms have equivalent partial negative charges (#2) The
  • Sulphate ion- confirmatory test - Chemistry Stack Exchange
    On adding $\\ce{BaCl2}$ solution to $\\ce{ SO4^{2-}}$ salt aqueous solution $\\ce{ BaSO4}$ is formed as a white precipitate, which confirms the presence of the anion While doing the test in my school





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