Hi well what i don't get about Oxyacids are these questions lol
Hydrogen Sulphate gets H2SO4
Sulphuric Acid get H3SO4
(Why does sulphuric acid give Hydrogen a 3 then a 2?
like this question
Phosphorous Acid
Hydrogen Phosphite gets H3PO3 (aq)
Why does it get a 3 instead of just leaving it blank> I don't understand that concept lol
2007-10-18 12:13:43 · 3 answers · asked by PinK_sugar23 2 in Science & Mathematics ➔ Chemistry
Hydrogen sulfate = sulfuric acid = H2SO4
Phosphorous acid = hydrogen phosphite = H3PO3
Someone has taught you wrongly. Or you did not learn it correctly.
2007-10-18 12:18:24 · answer #1 · answered by steve_geo1 7 · 0⤊ 0⤋
its because phosphate (PO3) is a polyatomic ion with charge 3-. In order to balance out the negative 3 charge, you need 3 hydrogen ions (+1 each) to give you an overall neutral acid. Sulfuric acid should give you H2SO4, I've never heard of H3SO4, because the sulfate ion (SO4 2-) is an ion with negative 2 charge. Sulfuric acid is the same thing is Hydrogen sulfate, by the way, when its dissolved in water. Hydrogen sulfate would be the .. solid form of the dissolved substance, I guess.
The only case where you would "just leave it blank" would be if the polyatomic ion attached to the hydrogen had a charge of -1, because you assume that if theres nothign there than its just one. For example HCl is HCl because Cl has a negative one charge.
You should read about oxidation numbers and ionic charges and how ions and acids work. If you read about oxidation numbers it will explain why phosphate has a 3- charge in the first place.
2007-10-18 12:18:09 · answer #2 · answered by Anonymous · 0⤊ 0⤋
I believe you are a little confused.
H2SO3
H2SO4
Sulfur is in two different oxidation states-
H2SO3: S is +4
H2SO4: S is +6
H3PO4
H3PO3
Phosphorus is in two different oxidation states-
H3PO4: P = +5
H3PO3: P = +3
The H is +1 and the O is -2
Do you know the names of each of the oxoacids? (A good test question.)
2007-10-18 12:28:11 · answer #3 · answered by skipper 7 · 0⤊ 0⤋